Answer: the Sun
Step-by-step explanation:
The gravitational pull created by the sun causes Earth to revolve around it.
The reason the planets orbit the sun is because the sun exerts gravity on them that pulls them towards it but because the planets are in motion, they instead orbit the sun.
This is the case with Earth. The sun's gravitational pull on Earth is about 27.9 times stronger that the gravitational pull we have on Earth. With the Earth moving at 30 kilometers per second, it is able to balance this pull such that it revolves around the sun instead of crashing into it.