The correct answer to this question is C, Tu quoquo. This means two wrongs make a right. There are many examples of fallacies, and tu quoquo is one of them. This fallacy is when a person justifies an action by saying someone else has done the same thing or if not the same, a similar action.
In the example in this question, the student feels justified in his action of cheating on a test because someone else was late for class. Both actions are wrong, but the student uses his fallacy to justify how both of their actions make his cheating right.