That's correct! All the planets in our solar system orbit around the sun. The sun's gravity is what keeps the planets in their orbits. The gravitational pull from the sun is much stronger than the gravitational pull from any other object in the solar system, including the moon, other planets, or even our own Earth. So the answer to the first question is option A: the gravity from the sun. And the answer to the second question is the sun itself. Great job!
