Answer:
D) 475 million
Step-by-step explanation:
Unemployment is the people who is not currently working and searching for the job. These are the part of Labor force. So unemployment rate is as follows:
Unemployed Worker = 19 million
Unemployment rate = 4%
Unemployment rate = Unemployed worker / Labor force
4% = 19 million / Labor Force
Labor Force = 19 million / 4%
Labor Force = 475 million