Which group of words in this sentence is an independent clause?
Back in New York once more, Bearden briefly became a songwriter before persuing art again.
A. Bearden briefly became a songwriter
B. became a songwriter before persuing art again
C. Back in New York once more
D. before persuing art again
We know that this is the independent clause because an independent clause can stand alone as a sentence. None of the other answer choices make sense by themselves.