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.

because he had a big bear belly

the correct answer is modern american cars are not available due to trade restrictions.

trade between cuba and the united states have serious restrictions. the u.s. imposed an economic embargo on cuba, that among other things means that modern american cars are not available due to trade restrictions.

in response to some governmental actions of the authorities from cuba, president john f. kennedy proclaimed an embargo on trade between both countries in february 1962. the trade embargo remains active until this day and was implemented directly by the departments of commerce and the department of treasury.

in president trump’s administration, there is a national security presidential memorandum that "strengthens the policy of the u. s.", affecting trade with cuba.