Step 1: Analyzing the Core Problem:
The problem states that Shweta's primary challenges are high stress and cognitive anxiety caused by academic pressure.
Step 2: Evaluating the Benefits of Exercise for Stress Management:
While physical exercise helps build strength (A), provides opportunities for socialization (C), and reduces disease risk (D), its most immediate benefit for an anxious student is neurochemical. Exercise lowers cortisol levels and triggers the release of endorphins, which helps calm the nervous system and promote mental relaxation.
Step 3: Conclusion:
Since mental relaxation directly addresses her current state of stress and anxiety, option (B) is the most appropriate choice.