Not far from Flagstaff, Arizona, travelers can visit a campground. Visitors may bring their own tents to stay in, or they may choose to rent a "yurt." A yurt is a kind of tent. It is made of fabric, it is round, and it is portable. Unlike most tents, the yurts in Arizona feature wooden floors and wood stoves for heat in the winter. They have doors and windows, but no electricity or furniture, so campers still must bring flashlights and sleeping bags.
The yurts are
A. ceremonial
B. unprotected
C. communal
D. elaborate