What happens next in this paragraph?

Some people are shown riding down the river rapids while a man watches them. A man says something to one of the riders as they pass. the second rider
Select from the following. (a). looks back as he passes the man.. (b). slows down in the water as he makes a turn.. (c). is a man carrying a kayak and talking.. (d). starts paddling and is kayaking way more quickly..
(a).