Answer:
D: The Wilsons asked you to return their camera when you see them.
Step-by-step explanation:
A is not correct because "they're" in the sentence means "they are". So, the principal at they are school just started her job this year does not make sense. B is not correct because "there" means in, at, or to that place of position. Over there is a tree. There is a mountain lion in the city. That sort of thing. C is wrong because "their" means numerous people's possessions. Their camera is cool. Their notebook is awesome. In conclusion, D is the only one spelled correctly.