Answer:
The sun is heavier than all of the planets, thus having more gravity
Explanation:
Because the sun is heavier, it exerts more gravitational pull towards itself, thus keeping all of the planets in orbit.
By eliminating the other incorrect answers, the best answer is (b) <span>chemical reactions involve bonding and nuclear reactions involve releasing particles. Chemical reactions are mainly concerned with bonding between chemicals (though sometimes electrons are released but another atom/ion will absorb it), unlike nuclear reactions which always involves releasing subatomic particles.</span>
