I just answered a question from this user. Then, I looked into the profile and it looks like he just registered 2 days ago and asked two questions. The first question is obviously either homework or an exam question. Furthermore, the title of the second question (the one I answered) has the word "urgent". Both has a very suspicious multiple-choice type structure.
What's the standard procedure in this case? I'd like to know if I should flag the user or just vote to close the questions. Should I delete my answer?
UPDATE: After an overnight, the OP has now 5 of these questions
Last update: after adding this reply to another of his questions, I'll vote to close any other one. Thanks all for the suggestions.