Concept:The farthest planet in the solar system is identified by its average distance from the Sun.
Explanation:The planets are arranged in order of increasing distance from the Sun.
Mercury is the closest planet, followed by Earth and then Saturn.
Pluto lies farthest from the Sun among the four options given.
Pluto is about
39.5 astronomical units (AU) from the Sun on average.
Although Pluto was reclassified as a dwarf planet in
2006, it is still the correct choice because Neptune is not listed among the options.
Thus, the intended answer is Pluto.
Answer:A. Pluto