Kepler's third law of motion specifically relates to the relationship between the orbital period of a planet and its distance to the sun. Therefore, the correct response among the options provided is:
A) rotational velocity, distance to sun
However, it's important to clarify that in the context of Kepler's laws, the more precise phrasing would be about the "orbital period" rather than "rotational velocity." None of the options are perfect, but if we are strictly considering variables relevant to Kepler's third law, we would typically focus on the "period of revolution" and the "distance to the sun."
If rephrased, option would be closest to representing that relationship. If you have more context for the questions, please provide, and I can guide further!