Explanation:
The correct answer is A. failed.

Explanation:
The phrase "fell through" is an idiom that means something failed to succeed or did not work out as planned. It suggests that the plans were unsuccessful or did not come to fruition.

- A. failed: This is correct. "Fell through" means the plans did not succeed or were unsuccessful.
- B. were accomplished: This is the opposite of "fell through," which implies failure, not success.
- C. had to be reviewed: This implies the plans needed reconsideration, but it doesn't fully capture the meaning of failure implied by "fell through."
- D. were rejected: While rejection could be a reason for failure, "fell through" doesn't specifically mean the plans were rejected, just that they didn't succeed.
- E. fell: This is too vague and doesn't fully convey the idea of plans failing or not succeeding.

Therefore, A. failed best conveys the meaning of "fell through."