which characteristic is common to all inner planets? rings moons rocky surfaces slow revolutions

which characteristic is common to all inner planets? rings moons rocky surfaces slow revolutions
Answer
Brief Explanations:
Inner planets (Mercury, Venus, Earth, Mars) are terrestrial with rocky surfaces. They don't have prominent rings like outer planets. Not all have moons (Mercury and Venus have none). They have relatively fast revolutions compared to outer planets.
Answer:
C. rocky surfaces