Also in 2025 Practice Test A English, question 51.
Passage The Benefits of Indoor Plants
The Benefits of Indoor Plants
(1) In an age of endless media content, it is easy to see why people might prefer to stay inside. (2) According to a study sponsored by the Environmental Protection Agency, Americans spend an average of 87 percent of their time indoors. (3) Scientists say that this separation between people and nature puts people at risk for physical and psychological issues.
(4) During the process of photosynthesis, plants convert carbon dioxide into oxygen and remove many harmful toxins from the air. (5) Spending prolonged periods of time indoors, away from plants, deprives people of these benefits. (6) Air that is not regularly detoxified can lead to a condition known as sick building syndrome. (7) This disorder first came to light in the 1970s when many office workers in the United States began to complain of unexplained flu-like symptoms. (8) Researchers determined the cause to be volatile organic compounds, or VOCs. (9) VOCs are harmful chemicals that are emitted by everyday objects such as carpet, furniture, cleaning products, and computers. (10) The NASA Clean Air Study found a simple way to remove a significant number of VOCs within a 24-hour period: add plants to indoor spaces.
(11) Adding plants to indoor spaces has psychological benefits too. (12) Research has long linked time spent in natural environments with increased energy and feelings of contentment. (13) While being outdoors is an excellent option for improving a person’s mental health, recent research has indicated that encountering natural elements while indoors can also help. (14) To experience the maximum benefit of natural elements, experts suggest placing at least one live plant per 100 square feet of home or office space.
(15) Connecting with nature, even just by being near an indoor plant, is a significant factor in a person’s well-being. (16) Sitting in front of an electronic screen all day isn’t natural, and today’s workers need to get up and get outdoors. (17) Richard Ryan, a psychology professor at the University of Rochester, puts it this way: “Nature is something within which we flourish, so having it be more a part of our lives is critical, especially when we live and work in built environments.”
Question
Which sentence could best follow sentence 13 to support the ideas in the third paragraph (sentences 11–14)?
- AA global study of 7,600 workers from sixteen countries revealed that employees who worked in spaces with natural elements, such as indoor plants, were more creative and productive than employees who worked in spaces without natural elements.
- BSpecifically, a study suggests that one well-known hotel is popular among guests because its owners have made a significant investment in landscaping and indoor plants known to have a relaxing effect.
- CIn fact, one recent study suggested that people who are routinely exposed to natural elements seem to increase their compassion for others, perhaps because that exposure generates compassion for the environment in which they live.
- DAccording to a study that was conducted in 2003, plants can reduce the amount of noise that people perceive in indoor spaces with hard surfaces, just as adding carpet can make a room seem quieter.
Show the answer
Correct answer: A
The question asks for the sentence that could best follow sentence 13 to support the ideas in the third paragraph (sentences 11–14).
A. CORRECT. The sentence could best follow sentence 13 because it directly supports the main idea of the third paragraph that indoor plants provide “psychological benefits” (sentence 11) by presenting the findings of a relevant research study. The details about the study provide a concrete example of the mental benefits of indoor plants: the employees in the study who worked near plants “were more creative” and accomplished more than those who worked in spaces without plants.
B. Incorrect. Although the sentence describes a study in which indoor plants were found to have a positive effect, it does not clearly support the ideas in sentences 11–14, because the sentence focuses on the popularity of the hotel rather than psychological benefits. Therefore, this sentence does not best follow sentence 13 to support the ideas in the third paragraph.
C. Incorrect. Although the sentence suggests that being “routinely exposed to natural elements” can increase the positive emotion of compassion, it could not best follow sentence 13, because the reference to “natural elements” is too vague to sufficiently support the ideas in the third paragraph. The sentence does not logically follow the idea from sentence 13, which refers specifically to “encountering natural elements while indoors.”
D. Incorrect. The sentence develops the idea that indoor plants are helpful by comparing them to carpeting and stating that they can reduce the amount of noise that people perceive. Noise cancellation, though convenient, is irrelevant to the topic of the third paragraph, which is specific to the psychological benefits of indoor plants. Therefore, this sentence does not best follow sentence 13 to support the ideas in the third paragraph.
Question analysis
This supporting-details question asks which sentence could best follow sentence 13 to back up the third paragraph (sentences 11–14) of the indoor-plants passage. All four options report a study or finding about plants or nature, so students must check each against what the paragraph is about and where sentence 13 leaves off.
- NYS standards
- 7W2b developing a topic
- Grade level
- Grade 8 reading and task
- Compared with grade 7
- Above grade 7 Grade 7 writers choose relevant evidence for a point. Here each option is a long sentence describing a plausible study, and the best fit depends on matching the paragraph's exact point, a finer judgment than typical grade 7 work.
- Estimated difficulty
- Hard: combines ideas, needs a plan, and has more than one tempting wrong answer.
- Thinking it demands
- Depth of knowledge 2, skills and concepts · mainly evaluate
- What makes it hard
- A very close wrong answer moderate
- How sentences fit together moderate
- A lot to read minor
- Evidence
- Answered from one paragraph or stanza
- Reading level
- Passage: about grade 12, 346 words; question and choices: about grade 15, 151 words.
- Students, last 30 days
- Not enough answers yet to show (it takes 10).
Why it is hard, traps and wrong answers (shows the answer)
Why it is hard
Every option cites a study about plants or nature, and two name feelings, a relaxing effect and compassion, which sound more psychological than the key's creativity and productivity. The decision rests on two conditions from the paragraph: the benefit must be psychological, and the nature must be indoors. Students who test only one condition end up with the compassion study, which is not about indoor spaces, or the hotel, whose finding is about popularity.
A very close wrong answer moderate Choosing the answer
The compassion choice and the key both report a study tying natural elements to a mental effect; the compassion study drops the indoor setting that sentence 13 specifies and turns to caring for others. (Embretson & Wetzel, 1987; Gorin & Embretson, 2006; Ascalon et al., 2007)
How sentences fit together moderate Working it out
The added sentence sits between sentence 13's research on “encountering natural elements while indoors” and sentence 14's one plant per 100 square feet, so it must give evidence about nature indoors. (Halliday & Hasan, 1976)
A lot to read minor Understanding the question
The options run 31 to 37 words, each describing a different study, so four separate findings must be read and held against the paragraph's point. (Kintsch, 1998; Gorin & Embretson, 2006; Freedle & Kostin, 1993)
Strategy: Restate sentences 11 and 13 in your own words, then ask of each option whether it gives evidence for that exact point or for a related benefit the paragraph does not discuss.
Traps
- Off the point: Adds or keeps something that does not support the paragraph's or the passage's focus, or an introduction or conclusion that misses the main point.
- Too broad or too strong: A choice overstates, generalizes, or uses absolute words the text does not support.
The wrong answers, classified
B Off the point (Halliday & Hasan, 1976)
Spots indoor plants and a “relaxing effect,” but the finding is that a hotel is popular with guests, a business result rather than evidence about people's well-being.
C Too broad or too strong (King et al., 2004)
Sees compassion as a psychological benefit, but the study covers exposure to “natural elements” in general, not the indoor encounters of sentence 13, and its benefit is caring for others.
D Off the point (Halliday & Hasan, 1976)
Accepts any benefit of indoor plants, but rooms that seem quieter are an acoustic advantage, not the psychological effects that sentence 11 names as the paragraph's subject.
Working it out, step by step
Figure out what the question asks
This revising question asks for a supporting detail. A supporting detail is a fact or example that backs up a paragraph’s point. The new sentence goes after sentence 13, in the third paragraph. So first pin down that paragraph’s exact point.
Find the paragraph’s point
Sentence 11 states it: “Adding plants to indoor spaces has psychological benefits too.” Psychological benefits are good effects on the mind and feelings. Sentence 13 adds that “encountering natural elements while indoors can also help.” Natural elements are bits of nature, like plants.
Set two tests
So the new sentence must pass two tests. First, it must show a benefit for the mind. Second, it must be about nature indoors. Think of a paragraph about how bedtime reading helps kids sleep. A study about bedtime reading would fit. A study about reading on the bus would not.
Check each choice
- A is right. Workers near “natural elements, such as indoor plants,” were “more creative and productive.” Creative means good at new ideas. Productive means getting more done. Both are benefits for the mind, and the plants are indoors.
- B is wrong. The finding is that a hotel is popular with guests. That is about business, not people’s minds.
- C is wrong. It is about being “routinely exposed to natural elements” anywhere, not indoors. Its benefit is caring for others.
- D is wrong. Making a room seem quieter is about sound, not the mind.
Watch out: C names a feeling, compassion, so it sounds like a benefit for the mind. But it drops the indoor setting that sentence 13 is about.
Choose the answer
Only one choice shows a benefit for the mind from nature indoors. So the answer is A.
Why this answer and not the closest wrong one
C is the closest wrong answer, because compassion is a feeling. But its study is about natural elements in general, not inside a building. Sentence 13 is about nature indoors, and sentence 14 tells how many plants to put in a room. A fits right between them.
More questions like this
The original DOE question
The passage “The Benefits of Indoor Plants” as printed (page 60)
