Answer:
Author suggests that college freshman should try to register for classes held early in the morning because: Option A: it frees up the rest of your day for other activities
Step-by-step explanation:
Author states in the given passage that it is a mistake that some freshmen do by registering for classes that are late during the day. They do this so that they can sleep till late in the morning.
But this is not a good things to do because if one registers for classes early in the day then he can spend rest of his day in a better and healthier way. This would give him enough time to do different activities during the day, like studying, working at job or even doing fun activities. This would also help him going to bed early which is always a healthy habit.
Thus, Option A is most apt as it not because that early classes are cheaper or students are more attentive. Neither it is because early classes are more exciting.