Answer:
The correct answer is the letter b. This is a common occurrence. The policymaker usually disregards an economist's advice because they do not believe it is the most efficient policy.
Step-by-step explanation:
It is common for policymakers to disregard the advice of an economist. This is because in addition to their often finding that the policies suggested by economists are not the most efficient, they observe the political return of such action, ie not just efficiency, but the extent to which this policy will bring political benefits. Thus, as in this case, the policy is not implemented because it is not popular with voters.