Answer:
I studied for my quiz; I earned an A
Step-by-step explanation:
In a sentence, a semicolon is used to link two independent clauses that are closely related . Hence, it is used to join two or more parts in a sentence.
If we look at the sentence above, we will notice that there are two independent clauses in the sentence which are 'I studied for my quiz' and 'I earned an A' . The correct punctuation mark to use here is the semicolon. Hence the answer chosen.