What happens next?

A camera pans around a boy sitting on the ground and leads into him riding a skateboard. Several shots are shown of people riding around on skateboards as well as falling down and laughing. more clips

Options are:
(a). are shown of people sitting around a gym and speaking to one another.;
(b). are shown of people falling down in the front and still shots of kids riding around on the skateboards.;
(c). are shown of kids performing tricks on skateboards and riding past the camera.;
(d). are shown of people performing tricks falling off skateboards in the streets and taking photos of themselves.;
(c).