Also in 2025 Practice Test A English, question 49.
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 should follow sentence 3 to best introduce the topic of the passage?
- APlacing plants in homes and offices can provide a healthy bridge between nature and the indoors.
- BIt is important for people to realize that they need to spend more time near plants, whether indoors or out in nature.
- CFor their personal health and well-being, people need to spend more time outdoors or bring the outdoors in.
- DIndividuals with little connection to nature can experience illness, depression, and higher levels of stress.
Show the answer
Correct answer: A
The question asks which sentence should follow sentence 3 to best introduce the topic of the passage.
A. CORRECT. The sentence introduces the overall topic by previewing the main ideas in the passage. It introduces the connection between natural elements and well-being (“a healthy bridge”) and sets up the main argument of the passage (“Placing plants in homes and offices” can increase people’s well-being).
B. Incorrect. Although sentence 3 mentions the connection between “people and nature,” this sentence references the importance of spending time near plants while both indoors and outdoors. However, the passage focuses specifically on the benefits of having indoor plants.
C. Incorrect: Though the sentence describes a reason why indoor plants are important (“For [people’s] personal health and well-being”), the topic of the passage is related to the need for indoor plants, not the need for people to spend more time outdoors.
D. Incorrect. While the sentence refers to how time away from nature can affect health and well-being, the vague wording (“little connection to nature”) makes this sentence too broad to introduce the topic of the passage, and thus, it should not follow sentence 3.
Question analysis
This revising question works with the four-paragraph passage “The Benefits of Indoor Plants” and asks which sentence should follow sentence 3 to introduce the passage's topic. The opening paragraph ends on the health risks of time spent away from nature, and every choice continues that thought in some way, so students must judge which one prepares a reader for what the passage goes on to cover.
- NYS standards
- 7W2a introducing and organizing a topic
- Grade level
- Grade 7 reading and task
- Compared with grade 7
- At grade 7 Introducing a topic so that it previews what follows is a grade 7 writing standard, practised often in class. The passage is short and plainly worded, and the choices differ in focus rather than in grammar, typical grade 7 revision.
- Estimated difficulty
- Moderate: several steps, or a close reading with one strong distractor.
- Thinking it demands
- Depth of knowledge 2, skills and concepts · mainly evaluate
- What makes it hard
- A very close wrong answer moderate
- Evidence in several places moderate
- How sentences fit together minor
- Evidence
- Answered from the whole text
- Reading level
- Passage: about grade 12, 346 words; question and choices: about grade 9, 84 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
The first paragraph ends on a problem, and all four choices continue it plausibly, so the decision is about scope. The passage is about plants indoors, and the near miss offers outdoor time as an equal remedy, while another widens the subject to plants anywhere and a third simply restates the danger. Students who skim the topic sentences of the later paragraphs before choosing see that only an indoor solution introduces what follows.
A very close wrong answer moderate Choosing the answer
The choice ending “or bring the outdoors in” sounds like the key's “bridge between nature and the indoors,” but it adds spending more time outdoors, a remedy the passage does not develop. (Embretson & Wetzel, 1987; Gorin & Embretson, 2006; Ascalon et al., 2007)
Evidence in several places moderate Working it out
The topic only emerges from the later paragraphs: plants cleaning indoor air in sentences 4–10, their psychological benefits in 11–14, and nature brought indoors in 15–17. (Kirsch & Mosenthal, 1990; Gorin & Embretson, 2006)
How sentences fit together minor Working it out
The new sentence must follow sentence 3's warning about “separation between people and nature” and lead into sentence 4's photosynthesis, so it has to name plants as the remedy. (Halliday & Hasan, 1976)
Strategy: Skim the first sentence of each later paragraph to see what the passage actually covers, then test each choice: would it set up those paragraphs without promising something they never discuss?
Traps
- Half right: One half of a two-part choice is right and the other is not.
- Too broad or too strong: A choice overstates, generalizes, or uses absolute words the text does not support.
- Says it twice: Repeats an idea that the sentence or passage already states.
The wrong answers, classified
B Too broad or too strong (King et al., 2004)
Accepts a sentence about needing plants, but “whether indoors or out in nature” widens the subject to plants anywhere, while the passage discusses only plants inside.
C Half right (King et al., 2004; Thissen, Steinberg & Fitzpatrick, 1989)
Is drawn by “bring the outdoors in” and “health and well-being,” but the other half, spending more time outdoors, is a remedy the passage never goes on to develop.
D Says it twice (Connors & Lunsford, 1988)
Follows sentence 3 smoothly by naming illness, depression and stress, but that only restates its “physical and psychological issues” and never introduces plants, the passage's subject.
Working it out, step by step
Figure out what the question asks
This revising question asks you to add a sentence that introduces the topic. Such a sentence tells the reader what the passage will be about. For example, an essay about why dogs make good pets might start: Dogs make loyal, loving pets. The new sentence goes after sentence 3, so it must also follow from it.
Find the passage’s topic
Skim the rest of the passage. Sentences 4–10 tell how plants clean indoor air. Sentences 11–14 say plants indoors help the mind. Sentences 15–17 say even an indoor plant connects you with nature. So the topic is plants inside homes and offices. The title says it too: “The Benefits of Indoor Plants.”
Connect it to sentence 3
Sentence 3 names a problem: “this separation between people and nature puts people at risk for physical and psychological issues.” Psychological means having to do with the mind and feelings. The best next sentence should name the fix the passage talks about: bringing plants indoors.
Check each choice
- A is right. It names plants “in homes and offices” as “a healthy bridge between nature and the indoors.” A bridge connects two things, so plants bring nature inside. That sets up every later paragraph.
- B is wrong. “Whether indoors or out in nature” widens the topic to plants anywhere. The passage only discusses plants inside.
- C is wrong. It offers two fixes: more time outdoors, or bringing the outdoors in. The passage develops only the second. C never even mentions plants.
- D is wrong. It just repeats sentence 3’s problem in new words. It never brings up plants, the subject of the passage.
Look closely at choice C
Watch out: C sounds close because of “bring the outdoors in.” But the passage gives no tips for spending more time outside. Sentence 13 mentions being outdoors only on its way to the indoor point. So half of C promises something the passage never delivers.
Choose the answer
Only one choice moves from sentence 3’s problem to the passage’s answer, plants inside. So the answer is A.
Why this answer and not the closest wrong one
C is the closest wrong answer, because “bring the outdoors in” sounds like A. But C gives equal weight to spending more time outdoors, and the passage never develops that idea. A points only to plants indoors, which is exactly what the rest of the passage is about.
More questions like this
The original DOE question

The passage “The Benefits of Indoor Plants” as printed (page 60)
