Multi-select problem: How does the next paragraph end?

A man is engaged in scuba diving. He explores the fish and coral on the floor. he

Options:
a). swims through a school of fish, observing the wildlife.;
b). speaks to the camera as he works.;
c). lays on the floor and then lays down.;
d). holds a fish upright while he swims under the water.;
a).