Kepler's third law of motion relates the period of revolution of a planet around the sun to its average distance from the sun. The correct variables involved in understanding Kepler's third law are:
period of revolution, distance to sun
However, since "distance to sun" is not listed in your options, the best fit based on your choices would be:
orbital velocity, distance to sun
but note that it's more about the period of revolution in relation to the distance to the sun.
If you have an option related to the period of revolution and distance from the sun, that would be the most accurate representation of Kepler's third law.