The target rate of unemployment is constant changing but eas

The target rate of unemployment is: constant. changing but easy to estimate. O difficult to determine. O always equal to the actual unemployment rate.

Solution

Answer is Difficult to determine.

Explanation:

Target rate of unemployment is determined by FED government after looking in to factors like interest rates, production levels, actual employment rate, etc. All these factors are difficult to determine based on which the target rate of unemployment is set.