Question

remember your first thrill of american liberty
your duty-buy united states government bonds 2nd liberty loan of 1917
this poster encouraged people in the united states to support the war by dropdown with options: rationing food, stopping u-boats, buying war bonds. based on the artwork, it is most likely geared toward blank.

Explanation:

The poster mentions "United States Government Bonds" and "2nd Liberty Loan of 1917", which are related to war bond campaigns. Rationing food is about resource allocation, and stopping U - boats is a military tactic. The poster's focus on bonds shows it's for buying war bonds.

Answer:

buying war bonds