Answer:
B
Explanation:
Let's not make it complicated. The original text used stuff about, making it less informal and casual. Although the question is looking for a more concrete phrase, A and D doesn't look like a better way to write it.
Maybe consider C but it's highly likely its B.
To make it parallel I would say to put it in this format: We can’t go back; to go forward is our only option. This makes the verbs the same.
Choice D is the correct answer
Sorry I don’t quite get the question. Could you rephrase it?
