Natural Science CLEP Prep Practice Exam

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How many planets are in the Solar System?

  1. 9

  2. 6

  3. 8

  4. 4

The correct answer is: 8

The reason why A 9, B: 6, and D: 4 are incorrect is because the Solar System is comprised of 8 planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Pluto, which used to be considered a planet, is now classified as a dwarf planet. Therefore, the most accurate and up-to-date answer is C: 8.

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