Multi-select problem: How does the next paragraph end?

People rides horses in a trail road of a forest, then a little girl throws something to the ground. A woman takes a selfie while sits on a horse. the little girl

Select from the following.
(a). sits on a horse horse in back, while other people run in front of her.;
(b). is sitting cross legged, then a woman hold her hands and take a selfie.;
(c). throws around something on the ground.;
(d). rides a horse behind three adults, and adult rides a horse behind her.;
(d).