Final answer:
The correct formula for calculating the unemployment rate is (number of people unemployed/labor force) × 100.
Step-by-step explanation:
The correct formula for calculating the unemployment rate is option C): (number of people unemployed/labor force) × 100.
To determine the unemployment rate, you need to divide the number of unemployed people by the total labor force and then multiply the result by 100.
For example, if there are 7.635 million unemployed people and a total labor force of 157 million, the unemployment rate would be 4.8%.