The correct option is D endorse
The word 'refute' refers to proving something to be wrong or false.
Option A, agree refers to having the same opinion about something.
Option B, subscribe refers to expressing or feeling agreement with an idea or proposal.
Option C, recommend refers to advising or suggesting something as a course of action.
Option D, endorse refers to declaring one's public support or approval for something.
Thus, according to the meaning, the word 'endorse' is the opposite of the word 'refute'.