In terms of the underlying causes of performance problems, leaders seem to have the most difficulty recognizing and rectifying:
a. motivation problems.
b. unclear expectations.
c. employee skill deficits.
d. resource shortages.

A. motivation problems.

Explanation:

The answer is --

A. motivation problems.

A performance problem is drawback in somebody to perform well or work diligently to achieve the desired result. The performance management  for an employee is to help the individual to be successful and bring the desired outcome of the wok on time. But many fails to do so and the the main underlying cause for performance problems is the lack of motivation in people. people are not motivated to work for the desired goal and success.

Thus the leaders finds it very difficult to recognize and rectify the motivational problem in peoples.

Therefore the answer is --

A. motivation problems.

answer; the above statement is (false);