Let's encourage the commenter with the correct answer to post it as an answer
7768
What should be done with questions that have been resolved as a comment instead of an answer?
52024
How can I link to a specific answer?
44564
Should moderators be able to convert answers into comments?
139624
Adding a way to mark answer as "partially accepted"
242
Accepting your own answer with alternative answers to be worth +2 reputation?
8765
Your answer is in another castle: when is an answer not an answer?
116563
Where to post a "canonical answer" when it's not in response to a specific question?
119730
Etiquette for selecting answers
100745
What to do about well received answers that don't answer the question, if correctness of an answer is subjective/needs expertise to see it's wrong?
108965
If I solve someones problem instead of answering their question, should I post a comment instead?
111135
Asking upvote for accepted answer
53369
How to Give Credit for An Answer in the Comments
18466
Is it ok to add examples to an answer?
59893
How can I correct this code to get an answer?
55293
What is desired practice for deriving answers from comments?
34482
What should we do with "comments as answers" in review now?
13367
Best way to deal with questions answered by the OP in the question instead of in an answer