The unemployment rate is the

A) ratio of unemployed to employed workers.
B) number of employed workers minus the number of workers who are not in the labor force.
C) percentage of the civilian labor force which is out of work.
D) percentage of the total population which is out of work.

The unemployment rate is the percentage of the civilian labor force that is out of work. It is calculated by dividing the number of unemployed individuals by the total number of individuals in the labor force (both employed and unemployed). Therefore, option C is the most accurate statement.