The riverwoods high school fitness club class is having a discussion about an upcoming activity. as timothy shares the itinerary, taylor takes notes and wendy looks out the window. trevor interrupts with a sarcastic remark, which makes samantha laugh. anton raises his hand and asks the coach to repeat the time of departure. which student demonstrates active listening skills

The student that demonstrates active listening skills is Anton.
He is the only one who's been actively listening to Timothy, which is obvious from the question he asked. Taylor isn't listening actively, but rather passively taking notes. Wendy isn't listening at all. Trevor was listening to just one part of the speech in order to make a joke, and Samantha listened only to Trevor. Which leaves us with Anton.