Which of the Following Is Not a Cause of the Decline

Multiple Choice

Which of the following is not a cause of the decline in the U.S. men's labor-force participation rate over the past several decades?

A) Young men now stay in school longer than their fathers and grandfathers did.
B) Older men now retire earlier and live longer.
C) With more women employed, there are fewer jobs now available to men.
D) More fathers now stay at home to raise their children.