The passage emphasizes the benefits of sleep for memory retention and problem-solving, which makes it the central idea. While late-night studying is mentioned, it is presented as less effective.
"Paved the way" is a figurative expression meaning to prepare or make progress easier for future achievements.
The passage describes Tom as analytical and Jerry as quick to act, implying contrasting decision-making styles.
The sentence explicitly states that the rejection was due to insufficient evidence, making this the correct answer.
The paragraph mentions that the descriptions are meant to "enhance understanding," which directly aligns with this answer choice.