How did the enforcement acts try to protect citizens?
a. they made it a federal crime to interfere with a citizen's right to vote.
b. it stated that anyone who tried to prevent voting from taking place would be fined.
c. voting places populated by african americans were manned by local militia.
d. anyone who terrorized african americans at voting places was arrested by local law enforcement and fined.

C. Voting places populated by African Americans were manned by local militia.

Explanation:

The Enforcement Acts were three bills passed by the United States Congress between 1870 and 1871. They were criminal codes which protected African-Americans' right to vote, to hold office, to serve on juries, and receive equal protection of laws.

they usually pass federal laws

and sometimes in the elections of the president