I'll give brainliest Why was Marian Anderson not allowed to sing at Constitution Hall?

Anderson had spoken out against the Daughters of the American Revolution (DAR), who owned the venue at the time.

Constitution Hall was owned by the Daughters of the American Revolution (DAR), who refused to let African Americans perform there.

Anderson was not yet famous enough when her manager tried to book a concert date at Constitution Hall.

Constitution Hall was undergoing some major renovations, so no one was able to schedule a performance there.