Solution to M:

    Many of you noticed that if you map out the buildings in the titles, you get the rough shape of a question mark. If you tried to enter "question mark" as an answer, you would have gotten a message telling you that you are using the wrong buildings.

    

    The correct buildings to use can be found in the answers to the other Act 1 questions. If you break each answer into pairs of letters, you'll notice that each pair is a valid U of T building code. Furthermore, for each answer, if you map out the buildings in order, it forms the shape of a letter. Combining the seven letters, it spells the word "VILLAIN".

VILLAIN