What is the name of largest moon in our Solar System?

Ganymede

The correct answer is Option (2) - Ganymede

Ganymede, a satellite of Jupiter is the largest and most massive of the Solar System's moons. Ganymede has a diameter of 3270 miles (5,268 km) and is larger than the planet Mercury. It has a rocky core with a water/ice mantle and a crust of rock and ice. Ganymede has mountains, valleys, craters and old lava flows.