What factor contributed to the baby boom after World War II?

(1 point)
Women no longer worked
in factories and could raise families.
There were improvements
in health care and nutrition after the war.
The country felt the need to grow the population after losing so many men in both world wars.
Couples were having more children because they could help contribute to the family income.

The country felt the need to grow the population after losing so many men in both world wars.