What happens next?

A group of people are sitting in a pool of water that is precariously close to the edge of a waterfall. The woman jumps in the water and everyone cheers. the group of people

Choices:
(a). are laughing and talking while more people jump in the water.
(b). propel themselves back and forth over the waterfall.
(c). go under the waterfall and stay there awhile.
(d). continue to walk to the waterfall.
(a).