According to Kepler's third law of planetary motion the period of revolution of a planet is related to the planet's __ a size b orbital speed C gravitational attraction distance to the sun

## Kepler's Third Law of Planetary Motion, also known as the Law of Harmonies, states that the square of the orbital period of a planet is directly proportional to the cube of the semi-major axis of its orbit. This means that the time it takes for a planet to orbit the sun (its period of revolution) is related to the size of its orbit, which is determined by its distance to the sun.<br />## The law does not take into account the size of the planet, its orbital speed, or its gravitational attraction. Therefore, the correct answer is "d. distance to the sun".