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tatianaksmith tatianaksmith
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6 years ago
When people or roaches undertake a difficult task, the presence of others ________ performance; when they undertake a simple task, the presence of others ________ performance.
 
  a. enhances; impairs
  b. diminishes; has no effect on
  c. has no effect on; enhances
  d. impairs; enhances
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wrote...
6 years ago
Answer: D
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