Final answer:
The student's concerns about being scrutinized in gym class are indicative of social anxiety disorder.
Step-by-step explanation:
The student's concerns about being scrutinized by others in gym class are indicative of social anxiety disorder. Social anxiety disorder, also known as social phobia, is characterized by intense fear and anxiety in social situations where the individual may be embarrassed, judged, or scrutinized by others. This can lead to avoidance of social situations or extreme distress when facing them.