But, actually, he chose a stag because it was large, powerful, and fast. It could survive a werewolf attack (assuming the worst case scenario happened). When the Marauders told Remus they were animagi.
At first, you are sad at the student having no answers. then you are rooting for the student. then, at the end, you learn the student was Einstein. Einstein was not the best example of a CHristian, so it alsmost numbs the victory.