Why do objects fall?

Why do objects fall down? Is it because:

a) The law of gravitation *compels* objects to fall down?

b) The law of gravitation, in common with all physical laws, just describes what happens, and it is in fact gravitational force or the warping of space-time, that compels objects to fall down?

c) Neither the law of gravitation nor gravitation itself (so defined) compel objects to fall down. Rather objects fall down because it's just the way reality is. The law of gravitation is merely a mathematical description of the falling process.  Gravity, as such, doesn't exist.

d) Some other reason.

I gravitate towards "c".