A major reason the United States entered World War I was to...
Select one:
a. maintain freedom of the seas
b. stop impressment of United States sailors
c. protect United States cities from foreign attacks
d. counter a German invasion of Latin America

d) counter a German invasion of Latin America

Explanation:

Wilson cited Germany's violation of its pledge to suspend unrestricted submarine warfare in the North Atlantic and the Mediterranean, as well as its attempts to entice Mexico into an alliance against the United States, as his reasons for declaring war.

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D.) Counter a german invasion of Latin America

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.

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