Multi-choice problem: Continue writing the next sentence in this paragraph:

A tropical beach is seen. Sea turtles graze and swim in the ocean. Various fish are seen swimming through the reef. a manta ray

Select from the following.
-swims in the ocean over a reef..
-approaches the dock, giving hand signals..
-watches and guides people..
-is seen walking through the water..
swims in the ocean over a reef.