Answer: (B) They quietly left white churches and formed their own religious organizations, which became centers for the African-American community.
Step-by-step explanation:
In the Reconstruction era, African Americans had more freedom than before due to the presence of Federal soldiers which enforced the new amendments giving African Americans freedoms as America citizens.
One of the things the African Americans did was to start their own churches. These were considered the first institution Black people could control for their own selves and so they became an integral part of black culture and they still are today.