According to Newton's Law of Gravity, Why Does Earth Orbit

Multiple Choice

According to Newton's law of gravity, why does Earth orbit the Sun?

A) The Sun exerts a gravitational force on Earth across empty space.
B) Earth and the Sun are continually exchanging photons of light in a way that holds Earth in orbit.
C) Matter contains quarks, and Earth and the Sun attract each other with the "color force" between their quarks.
D) Space around the Sun is curved.