How does Zaroff view humanity

Ineed answers 5 and 6 on my social studies homework reply to this question i posted

What initiatives were taken by americans to benefit the war effort? 1. americans planted home gardens to ration food for the troops. 2.american charities were established to provide aid to factory workers. 3.american companies joined together to make products more cheaply. 4.americans created clubs for promoting weapons to be used in the war.

Which one of the following statements best characterizes change to agriculture in the united states since 1900