Question

why does the suns gravity control the solar system?
it is the largest object
it is the hottest object
it is the smallest object
it is the hottest object

Explanation:

Gravity's strength depends on mass (and distance). The Sun has the most mass in the Solar System (it's the largest object by mass/volume here). Heat (temperature) doesn't determine gravitational control, and "smallest" is incorrect. So the correct reason is it being the largest object.

Answer:

A. it is the largest object (assuming the first option is labeled A, adjust label if needed; the key is the option "it is the largest object" is correct)