Independent clause uses commas to separate independent clauses when they are joined by any of these seven coordinating conjunctions: and, but, for, or, nor, so, yet.
Washington, Harvard, and New Mexico go in where :))
(I hope i'm right)
Which event was MOST responsible for Richard Nixon's announcement of the end of the Indian termination policy.
I think it would probably be B.
Hope this helped! If i'm wrong, please tell me so I don't make the same mistake in the future. Thanks and have a lovely day! ~Pooch ♥