Multiple Choice
When people or roaches undertake a difficult task,the presence of others _______ performance; whereas when they undertake a simple task,the presence of others _______ performance.
A) has no effect on; enhances
B) diminishes; has no effect on
C) enhances; impairs
D) impairs; enhances
E) enhances; has no effect on
Correct Answer:

Verified
Correct Answer:
Verified
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