Why is this propaganda poster from 1917 encouraging Americans to "plant and raise" vegetables?

Question

Responses
A The United States was at war against Japan.The United States was at war against Japan.
B There was a lack of farmers in the country.There was a lack of farmers in the country.
C All available food was needed to support the war effort.All available food was needed to support the war effort.
D The Dust Bowl had destroyed most farmland in the United States

Answer 1

The correct response is:

C. All available food was needed to support the war effort.

During World War I, there was an emphasis on increasing food production to support the troops and allies, as well as to ensure that civilian populations had enough food. The U.S. government encouraged citizens to grow their own vegetables to alleviate pressure on commercial food supplies.