While comparing answers in Explore, collect the parts you like, add a note on why, and merge your picks into one finished answer you can save to your conversation.
Often no single answer is the one. Add a whole answer, or just a passage you highlight, to My Answer as you read, and jot down why you picked it so the reason survives.
When you are ready, merge your picks. GPTree asks what the final answer should be, drafts it from your picks and your original prompt, and lets you save it into your conversation.