“War gardens” and woman working in factories were all, A: ways Americans ate during the war
B:ways patents motivated children to better nutrition
C:ways Americans helped in the war effort at home
D:ways the government raised money

C: ways Americans helped in the war effort at home

Explanation:

During the first World War, the world witnessed a crisis in terms of food and crops. Because of the devastation during the war, the world faced a crisis of food. A National War Garden Commission was ten set up in 1917 by Charles Lathrop Pack to help maintain the requirement of the food crops. Under this initiative, women were encouraged to grow crops and preserve in their houses during the war period. The stored food crops were then utilized by the troops and allies during the war. This step was considered very patriotic and it spread very rapidly among the women.

there is an explationation of this on a site called crash   course world history 1

semi-desert lowlands, hope this !