Q. Which one of the following is the largest satellite in solar system

Explanation by: Ruchi Sharma

ganymede is the largest satellite in solar system . ganymede is a satellite of Jupiter and the largest moon in the solar system. it is the seventh moon and third Galilean satellite outward from Jupiter. completing an orbit in roughly 7 days. Ganymede participates in a 1:2:4  orbital resonance with the moons Europe and Io, respectively. it has a diameter of 5268 km, 8% larger than that of the planet Mercury but has only 45 % of the latter's mass.