I think it’s c or d. But I’m going with c.
Answer:
what are you saying.Tell the question.
It's C, independent clause because those words can be turned into a sentence on it's own.
"Mockingbirds don't do one thing but make music for us to enjoy. ...That's why it's a sin to kill a mockingbird." <span>Miss Maudie Atkinson discussing why it is a sin to kill a mockingbird.</span>
Offers to mow his lawn, give him money, etc