This question has options. Select from options: Read this fact: "uneven heating of the Earth 's surface cause wind"

Now answer this question: "Jane's hat flew off her head while standing still on a hilltop. This could be because"

Options:
(a). her head blew the hat off.
(b). there was uneven heating of the ground.
(c). a squirrel jumped up and grabbed it off of her head.
(d). a spaceship pulled her hat off her head.
(b).