Answer:
C
Step-by-step explanation:
We want our verb to be conjugated correctly. In this scenario, the sentence says: "Let's finish...". The "let's" indicates that the subject is "we", so look for the conjugation of the verb "terminar" (meaning "to end/finish") in the "we" form.
The conjugation ending of an -ar verb in the "we" form is -amos. So, the answer is C (I think that was a typo and should be "terminamos", not "terminemos"?).
Hope this helps!