From the words or group of words lettered A to D, choose the one that best completes the sentence. The PTA meeting did not adjourn until it had discussed al...

Answer Details

The correct answer is "before". The sentence means that the PTA meeting continued until all the matters were discussed, and "before" means prior to the meeting being adjourned. "By" would imply a deadline for discussion, "with" implies simultaneous discussion, and "over" implies discussion across different time periods.