Why were Americans encouraged to grow their own food in victory gardens?

ATo increase the amount of food that could be sold to other nations.
BTo conserve resources for the war effort.
CTo spy on neighbors who were not focused on the war effort.
DTo feed the increased population of prisoners of war.

Verified Answer :

The main reason why Americans were encouraged to grow their own food in victory gardens was "B. To conserve resources for the war effort" since these were implemented during war time to ensure that enough food was left for those who could not farm.

to conserve resources for the war effort