Answer:
rocky surfaces
Explanation:
The other answers don't make sense. not all inner planets have moons, they don't have slow revolutions, and none of them have rings. They all have rocky surfaces though.
It should be noted that the characteristics is common to all inner planets is rocky surfaces.
The inner planets can be regarded as the planets of Mercury, Venus, Earth, and Mars.
They are been referred to as terrestrial , this is because they have a compact as well as rocky surface and there are four innermost planets in the solar system.
Learn more about inner planets at:
https://brainly.com/question/25624188