Write the next sentence in this paragraph:

Two women are shown talking about snorkling. There are fish swimming in the tank as the people look at them up close. classes

Options are: A). as the people surf are shown on the screen. B). are shown for teaching snorkeling before people begin diving into a river to look at the times on the floor. C). are shown and the people then begin to explore. D). are being held for people to " do " preparing to dive.
B).