He did not register his . . . . . . . . to the proposal.

The correct answer is D. dissent.

Dissent is the act of disagreeing with something, especially a decision or a course of action. In this case, the man did not

The other options are not correct because they do not mean the same thing as dissent.

• Deviation is a departure from what is usual or expected.
• Divergence is a difference in opinion or belief.
• Disfavor is a lack of favor or approval.

I hope this helps!