Planets in our solar system revolve around the sun because a. the sun is the brightest object in our solar system. b. the sun is the hottest object in our solar system. c. the sun is the most massive object in our solar system. d. the sun is the slowest object in our solar system.

Those options are very odd because none of those options are the reason the planets in out solar system revolve around the Sun. The real reason is because the Sun's gravity is pulling on the planets. However, if I had to choose one it would be the Sun is the most massive object in out solar system.

Option (C)

Explanation:

The sun is the most enormous astronomical body, which has a size of roughly 13,90,000 km in terms of diameter. Due to its larger size, its mass is also extremely high, which is about 1.989 × 10^30 kg.

There is a direct relationship between the mass of a body and the gravitational force of attraction, as the mass and the gravitational force of a body is directly proportional to each other. This means that a massive body has a high gravitational pull, and a lesser massive body has a lesser gravitational pull.

It is due to this extremely large gravitational pull of the sun and the massive weight of the sun, all the planets in the solar system revolves around the sun.

Hence, the correct answer is option (C).