Which moon of Jupiter is considered the most volcanically active body in the Solar System?

Io, one of Jupiter’s moons, is recognized for its high volcanic activity, making it the most volcanically active body in the Solar System. Its surface is covered with hundreds of active volcanoes, some of which send plumes of sulfur and sulfur dioxide gas hundreds of kilometers into the sky. The most famous of these volcanoes is Loki Patera, a massive volcanic depression that periodically erupts in powerful volcanic outbursts.