Correct Answer : (2) The planet nearest to the Sun is Mercury.
Mercury is the innermost planet (nearest to the Sun) in the Solar System.
It is also the smallest planet and its orbit is the most eccentric (that is, the least perfectly circular) of the eight planets.
It orbits the Sun once in about 88 Earth days, completing three rotations about its axis for every two orbits. This is why the Romans named it after their swift-footed messenger god.
Being the planet nearest to the Sun, it is a hot planet. Temperature variations on Mercury are the most extreme in the solar system ranging from 90 K to 700 K. Mercury is the second densest major body in the solar system, after Earth.
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