Passage Summary: Researchers found that people who exercise in the afternoon sleep more deeply than those who don't, likely because the exercise keeps their body temperature slightly elevated until they go to bed.

Reasoning: A study found that an afternoon exercise group achieved significantly more deep sleep than a non-exercising control group, likely due to elevated body temperature at bedtime.

Analysis: In a 'Most Strongly Supported' question, we treat the premises as absolute facts and look for a logical synthesis. The stimulus provides a specific causal mechanism: afternoon exercise leads to higher body temperature at bedtime, which in turn induces deeper sleep. Therefore, we can infer a positive correlation between slightly elevated body temperature at bedtime and the quality of sleep. Look for an answer that stays strictly within the bounds of this temperature-sleep relationship without making broad claims about all types of exercise or health.