Psychological barriers arise from internal emotional states such as fear,anxiety or lack of confidence. In the stem,the student understands that there is confusion but feels too anxious to speak up. This emotional block prevents effective two way communication. Therefore,it is a psychological barrier.
Option A:
Mechanical barriers involve technical or environmental problems like faulty equipment or noise.
Option B:
Semantic barriers stem from confusion about meanings of words,not from fear of speaking.
Option C:
Psychological factors like anxiety reduce participation and prevent clarification of doubts,making option C correct.
Option D:
Physical barriers are related to environmental obstacles or distance,not to inner feelings.
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