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

The tourists are happy as they wave to the camera as they enjoy the camel ride. The camels walk slowly through the dry and muddy grasslands. then the tourists

Options are:
a). leave the area completely and transport their camels into a shop.;
b). see the tarp as well as a man struggling to place it over the horse and the horse stands up and moves out of its way.;
c). get off of the camels and walk towards an outdoor dinning area where several tables are arranged with white tablecloths and dinnerware.;
d). get out of their vehicles and gather around saying goodbye and stop to drink a beer.;
c).