What law provided for a 40-hour work week?
a. consumer credit protection
b. sherman antitrust act
c. pure food and drug act
d. fair labor standards act

The law which provided for a 40-hour work week was D) Fair Labor Standards Act. The Fair Labor Standards Act establishes minimum wage, overtime pay, record keeping and youth employment standards affecting employees in the private sector, Federal, State and local governments.

I think the answer is 30