The unemployment rate is computed as the number of unemployed a. divided by the labor force, all times 100. b. divided by the number of employed, all times 100. c. divided by the adult population, all times 100. d. times the labor-force participation rate, all times 100.

a. divided by the labor force, all times 100

Explanation:

The unemployment rate it's calculated with number of people an multiplied by 100 all times, to calculate you have to take the number of unemployed people and divided by the labor force, that is the people that has the demographics conditions to work and that desire to work.

Unemployment rate = (unemployed number/ labor force) *100  

As you can see it's a proportion of the total labor force in terms of percentage you multiply all times by 100, what mean the  100% its the labor force of the region that you are analysing  

no

explanation: