What happens next?

Two boys are shown putting on scuba gear. An instructor takes them underwater. They swim around in shallow water. they

Available choices:
(a). then exit the water..
(b). stand on the shore adjusting to the different temperature and water and making sure to put sunscreen on, everything..
(c). walk on their hands underwater..
(d). engage in a game of tug of war with a shark..
(a).