Concept:The planets in our solar system are arranged by their distance from the Sun. Mercury is the innermost and closest planet.
Explanation:The order of planets from the Sun is: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.
Mercury orbits the Sun at an average distance of about 58 million kilometers.
Saturn is the sixth planet, Uranus is the seventh, and Jupiter is the fifth.
Therefore, among the given options, only Mercury is the closest to the Sun.
Answer:B. Mercury