they are singing about freedom from racism, from all of the hate and they in my opinion are singing for justice for those girls
I believe the answer is A, I had this same question on a test last year, and I'm pretty sure that's the answer.
The correct sentence using objective case pronoun is CHOICE A. Mom sent him and his brothers outside to play.
Choice B should be : Could THEY take the train instead of the bus?
Choice C should be : They have been friends for years. (We can take Beth out of the sentence.)
Choice D should be : The people holding the banner were Rob and Susan (any name).
Answer: A.
Explanation: Hope it helps.