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Which is the smallest planet in the solar system?

Answer and explanation

Correct answer: Mercury

The correct answer is Mercury, option B. Mercury is the smallest of the eight officially recognised planets in the Solar System. It is a rocky terrestrial planet in the inner Solar System and has the smallest diameter and volume among those eight planets. Mars and Earth are also rocky planets, but both are larger than Mercury. Neptune is an outer ice-giant planet and is far larger than Mercury. Mercury is also the planet closest to the Sun, but these are two separate facts: being closest to the Sun does not by itself explain why it is the smallest. Pluto is not a competing answer because it is classified as a dwarf planet, not one of the eight planets. Thus B is the only correct option; A, C and D name planets that are all larger than Mercury.

Related tags

Solar SystemMercuryPlanet SizeEarth ScienceStar FormationFormation Of PlanetsAnd Our Solar SystemStar Formation Formation Of Planets And Our Solar SystemThe Origin And Evolution Of The EarthGeography

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