Question

When people or cockroaches undertake a difficult task, the presence of others _________ performance; whereas when they undertake a simple task, the presence of others ________ performance.

Answer 1

impair;enhance.

Step-by-step explanation:

the blank will be filled with impair;enhance.

When undertaking difficult task the presence of others degrade or weakens the performance of the people.

And when undertaking the simple task the presence of other enhance the performance of the group.

This is because difficult work require more concentration and presence of other person affect the efficiency of the person.