OAR OAR Reading Comprehension: Main Idea 3 — Questions and Answers
Question 1: Read: 'The officer selection process in the Navy involves academic achievement, physical fitness testing, and leadership assessments. Candidates are evaluated over multiple stages, with each phase eliminating those who do not meet standards. The goal is to identify individuals who can lead under pressure.' The main idea is:
- Physical fitness is the most important factor in officer selection.
- Navy officer selection is a rigorous multi-stage process designed to identify capable leaders. (Correct answer)
- Many candidates fail the academic portion of officer selection.
- The Navy selects officers primarily based on college GPA.
Correct answer: Navy officer selection is a rigorous multi-stage process designed to identify capable leaders.
The passage describes the entire process and its purpose — finding leaders — making that the central idea.
Question 2: A passage has three paragraphs: one about ocean pollution causes, one about effects on marine life, and one about cleanup efforts. What is the most likely main idea?
- Cleanup efforts are too expensive to be effective.
- Ocean pollution is caused primarily by industrial waste.
- Ocean pollution is a serious problem with wide-ranging effects that requires active solutions. (Correct answer)
- Marine animals are the biggest victims of human pollution.
Correct answer: Ocean pollution is a serious problem with wide-ranging effects that requires active solutions.
A main idea that spans all three paragraphs — causes, effects, and solutions — best represents the whole passage.
Question 3: Read: 'Caffeine blocks adenosine receptors in the brain, preventing feelings of fatigue. It also increases dopamine signaling, which improves mood and alertness. However, regular consumption leads to tolerance, requiring higher doses for the same effect.' What is the main idea?
- Caffeine is addictive and should be avoided.
- Caffeine affects the brain through multiple mechanisms but can lead to tolerance over time. (Correct answer)
- Dopamine is the primary neurotransmitter affected by caffeine.
- Adenosine receptors control all feelings of fatigue.
Correct answer: Caffeine affects the brain through multiple mechanisms but can lead to tolerance over time.
The passage covers caffeine's positive mechanisms and the downside of tolerance, making the balanced overview the main idea.
Question 4: Which of the following best describes a 'stated' main idea?
- A main idea the reader must piece together from details.
- A main idea expressed directly as a topic sentence in the passage. (Correct answer)
- A main idea found only in graphs or charts accompanying the text.
- A main idea that contradicts the supporting details.
Correct answer: A main idea expressed directly as a topic sentence in the passage.
A stated main idea appears explicitly as a sentence (often a topic sentence) within the passage.
Question 5: Read: 'Voter turnout in local elections is consistently lower than in national elections. Local governments, however, make decisions about schools, roads, and public safety that directly affect daily life. Civic groups argue that increased local participation would produce more responsive governance.' The main idea is:
- National elections are more important than local elections.
- Low local election turnout is unfortunate given how directly local decisions affect residents. (Correct answer)
- Civic groups control local election outcomes.
- Roads and schools are the only issues decided by local governments.
Correct answer: Low local election turnout is unfortunate given how directly local decisions affect residents.
The contrast between low turnout and high local impact is the central tension and message of the passage.
Question 6: A supporting detail differs from the main idea because a supporting detail:
- Is always more interesting than the main idea.
- Provides specific evidence, examples, or facts that back up the main idea. (Correct answer)
- Is stated in the title of the passage.
- Can replace the main idea if it is compelling enough.
Correct answer: Provides specific evidence, examples, or facts that back up the main idea.
Supporting details exist to explain, prove, or illustrate the main idea, not to serve as the central point themselves.
Question 7: Read: 'Climate models predict more frequent and intense hurricanes as ocean temperatures rise. Coastal communities face increased flood risk, requiring updated infrastructure and evacuation planning. Insurance companies are already adjusting rates to reflect growing climate liability.' The main idea is:
- Insurance companies profit from climate change.
- Rising ocean temperatures will make hurricanes stronger.
- Climate change is driving increased hurricane risk that demands practical responses from communities and industries. (Correct answer)
- Evacuation planning has eliminated the danger from coastal flooding.
Correct answer: Climate change is driving increased hurricane risk that demands practical responses from communities and industries.
The passage ties the scientific prediction to real-world consequences and responses, making the broader impact statement the main idea.
OAR OAR Reading Comprehension: Main Idea 3
Read: 'The officer selection process in the Navy involves academic achievement, physical fitness testing, and leadership assessments.
Candidates are evaluated over multiple stages, with each phase eliminating those who do not meet standards.
The goal is to identify individuals who can lead under pressure.' The main idea is: