What is one reason for the change in the length of...

Câu hỏi: What is one reason for the change in the length of the workweek for the average worker in the United States during the 1930's?  

A Several people sometimes shared a single job.

B Labor strikes in several countries influenced labor policy in the United states.

C Several corporations increased the length of the workweek.

D The United States government instituted a 35-hour workweek.