During world war i, victory gardens were an example of which of the following?
german military efforts to weaken the united states
us government propaganda aimed at conserving food
war industry strategies meant to lower costs
farmers’ marketing campaigns focused on increasing profits

US government propaganda aimed at conserving food.

During World War I, victory gardens were an example of US government propaganda aimed at conserving food.

Vegetable, fruit, and herb gardens were cultivated at private residences and public parks in the United States during World War I. These were called as Victory garden or food gardens for defence.

It's B. US government propaganda aimed at conserving food

food chain i would say only because there is competition on getting food and survival