The correct answer is A.<span>could not be heard above the voices in the hallway
</span>
B is a subject, C is an adverbial of reason, while D is an adverbial of manner.
Answer:
I would go with D
Explanation:
I say D because you can literally do all those depending on who you are and what you like while being "productive".
I hope this help but yeah... I would personally go with D.
Answer:
What happened ? What did these events mean to the main character?