Selecting the best answer to a discussion board question
Sometimes it can be beneficial to mark the most highlight certain posts in a discussion, as it can help readers hone in on the most useful information. For discussions that are designated as questions, you can mark one post in the thread as the "Best Answer", which highlights the post in the thread. Only the original post's author or an admin can mark a reply as the best answer or remove the designation from a reply.
Any reply -- not the original post -- can be marked as the best answer by clicking on the Best Answer link in the bottom right corner of the post. Once a reply has been marked as the best answer, it will be highlighted in the thread.