The correct answer is US government propaganda aimed at conserving food
Step-by-step explanation:
During both World War I and World War II, governments of different countries promoted the idea citizens needed to grow their food. This was globally known as "victory gardens" and was necessary to guarantee the availability of food and reduce the responsibility of the government to provide food to its citizens, which allow it to focus on war. Moreover, this strategy did not only conserve food but helped citizens to keep a positive perspective during the war because producing their food was quite rewarding. According to this, these gardens were an example of "US government propaganda aimed at conserving food."