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Which of the following sets of characteristics describe what we know about the inner planets?
Select one:
a. They are closest to the sun, have many moons, and include ring systems.
b. They are closest to the sun, have many moons, and include ring systems.
c. They have rocky surfaces, no rings, and few or no moons.
d. They have rocky surfaces, ring systems, and are larger in size.

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The sets of characteristics describe what we know about the inner planets is that have rocky surfaces, no rings, and few or no moons. The answer is letter C. Also, they are smaller in sizes compared to the outer planets. The rest of the choices are characteristics of the outer planets.

Answer: The correct answer is Option c.

Explanation: There are 2 types of planets in Our Solar system:

1. Inner planets: There are 4 planets which are known as inner planets which are Mercury, Venus, Earth and Mars. These 4 planets lie close to Sun. These planets have rocky surfaces and have no ring system in them. The maximum number of moons in inner planets are 2. The orbital time of these planets is less than the outer planets.

2. Outer planets: There are 4 planets which are known as inner planets which are Jupiter, Saturn, Uranus and Neptune. These 4 planets lie far from the Sun. These planets have gaseous surfaces and have ring system in them. These planets have many number of moons as compared to the inner planets. The orbital time of these planets is more than the inner planets.

From the above information, the correct answer is option c.

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