Which planets exhibit retrograde motion, that is, periodically appear to reverse their direction of motion across the sky?
A) Only Mars, Mercury, and Venus
B) Only Mars, Jupiter, and Venus
C) Only Mars, Jupiter, and Saturn
D) Only Venus, Saturn, and Jupiter
E) All of the planets show retrograde motion.

Question

Quizplus · Accepted Answer

All of the planets in the Solar System exhibit retrograde motion as observed from Earth. This apparent reversal in their direction of motion across the sky is due to the relative positions and motions of Earth and the other planets in their orbits around the Sun.

Which Planets Exhibit Retrograde Motion, That Is, Periodically Appear to Reverse