单选题 Which of the following is the most accurate definition of the unemployment rate? The unemployment rate is the number of:

A. unemployed individuals divided by the number of employed individuals.
B. unemployed individuals divided by the total labor force.
C. unemployed individuals divided by the number of individuals employed plus the number of people in retirement.

【正确答案】 B

【答案解析】The unemployment rate of a country is the percentage of people in the labor force who are unemployed. It is calculated as: unemployment rate = (number of unemployed/labor force) × 100. The labor force includes those individuals who are employed or are actively seeking employment.