SELT Reading for the Main Idea 3 — Questions and Answers
Question 1: A passage discusses how smartphones have changed communication, entertainment, and navigation. Which title best reflects its main idea?
- How Smartphones Have Transformed Daily Life (Correct answer)
- The History of the First Smartphone
- Why Some People Prefer Landlines
- Navigation Apps and Their Limitations
Correct answer: How Smartphones Have Transformed Daily Life
The title must capture the broad impact of smartphones across multiple life areas as described in the passage.
Question 2: Paragraph: 'Community gardens bring neighbors together. They provide fresh produce for families and teach children about growing food.' What is implied but not directly stated as the main idea?
- Community gardens benefit neighborhoods in social and practical ways. (Correct answer)
- Children learn best when they work outside in gardens.
- Fresh produce is difficult to find in urban neighborhoods.
- Neighbors rarely interact without organized activities.
Correct answer: Community gardens benefit neighborhoods in social and practical ways.
The paragraph implies that community gardens create both social connections and practical benefits without stating this explicitly.
Question 3: A student reads: 'Solar panels lower electricity bills. They reduce carbon emissions. Governments offer tax credits for installing them.' The student concludes the main idea is 'solar panels are becoming cheaper.' This conclusion is:
- Incorrect — the passage focuses on benefits, not cost trends. (Correct answer)
- Correct because cost is mentioned indirectly through tax credits.
- Correct because reducing bills implies lowering prices.
- Incorrect because the passage only discusses carbon emissions.
Correct answer: Incorrect — the passage focuses on benefits, not cost trends.
The passage highlights benefits (financial savings, environmental impact, incentives), not a trend of decreasing prices.
Question 4: Which clue best helps a reader locate the main idea in an informational paragraph?
- The sentence that the other sentences explain or expand upon (Correct answer)
- The sentence with the most descriptive adjectives
- The shortest sentence in the paragraph
- The sentence containing a statistic or number
Correct answer: The sentence that the other sentences explain or expand upon
The main idea is the sentence that the supporting details all relate to and build upon.
Question 5: Passage: 'Bees pollinate crops that feed billions of people. Without bees, many fruits and vegetables would disappear from our diets.' The main idea is:
- Bees play a critical role in the human food supply. (Correct answer)
- Fruits and vegetables are an important part of a balanced diet.
- Billions of people rely on agriculture for their food.
- Pollination is a complex biological process.
Correct answer: Bees play a critical role in the human food supply.
Both sentences work together to establish that bees are essential to feeding people, making that the main idea.
Question 6: A passage contains this sentence in the final paragraph: 'In summary, regular exercise improves mood, boosts energy, and extends lifespan.' This sentence most likely serves as:
- A concluding restatement of the main idea (Correct answer)
- A new argument introduced at the end
- A supporting detail about one benefit of exercise
- An irrelevant concluding remark
Correct answer: A concluding restatement of the main idea
Summary sentences at the end of a passage typically restate the main idea by reviewing the key points covered.
Question 7: Two passages both discuss climate change. Passage A focuses on rising sea levels; Passage B focuses on policy responses. How do their main ideas differ?
- They share a broad topic but have different specific focuses and main ideas. (Correct answer)
- They have the same main idea because they share the topic of climate change.
- Passage A has a main idea but Passage B does not, since it covers policy.
- Main ideas only exist in Passage A because it includes scientific data.
Correct answer: They share a broad topic but have different specific focuses and main ideas.
A topic (climate change) can be shared, but the main idea depends on the specific argument or focus of each passage.
SELT Reading for the Main Idea 3
A passage discusses how smartphones have changed communication, entertainment, and navigation.
Which title best reflects its main idea?