The following text is from a health article.
Regular physical exercise not only strengthens muscles and improves cardiovascular health but also has significant benefits for the brain. Studies show that exercise increases blood flow to the brain, stimulates the growth of new brain cells, and enhances connections between neurons. These effects are particularly pronounced in brain regions associated with memory and learning. Researchers have found that even moderate exercise, such as a daily 30-minute walk, can help protect against age-related cognitive decline.
Which choice best summarizes the text?
Exercise has substantial benefits for brain health in addition to physical fitness
People should exercise for at least two hours daily
Brain cells cannot regenerate after a certain age
Walking is the only effective form of exercise
Correct Answer: A
Choice A is the correct answer. The text discusses physical benefits briefly, then focuses on brain benefits: blood flow, new brain cells, neural connections, and memory protection.
- Evidence: Lists multiple brain benefits of exercise.
- Reasoning: The text emphasizes brain benefits "in addition" to physical ones.
- Conclusion: Exercise helps both body and brain.
Choice B is incorrect because the text suggests 30 minutes is effective. Choice C is incorrect because the text says exercise "stimulates the growth of new brain cells." Choice D is incorrect because walking is just one example of "moderate exercise."