By the time american troops entered world war i, the allies
a. were determined to win the war without any .
b. were using trench warfare successfully against the germans.
c. were exhausted after years of fighting.
d. were preparing to attack germany.

By the time American troops entered World War I, the Allies were exhausted after years of fighting. The correct option among all the options that are given in the question is the third option or option "C". The American troops infused new energy into the Allied forces. I hope the answer has helped you.

Ithink i know of the assessment that you're taking, and the answer is "freedom to meet peacefully."