A、Sitting around all day. B、Taking care of the house while the owner is away. C、Watching a family’s kids in their house. D、Renti

Man: I’m not sure if I can find work this summer. There aren’t many jobs out there for inexperienced workers, and I can’t just sit around all day.
Woman: Have you ever heard about house - sitting? Tom is going to house sit for Mary’s family this summer when they travel to China.
Man: What exactly is house--sitting?
Woman: It’s kind of like baby - sitting except that you’re watching a house instead of kids.
Man: It sounds too good to be true. But I guess it won’t be that simple. Anyhow, I’d like to have a try.
Question 6: What is house - sitting?