Respuesta :
The best and most correct answer among the choices provided by the question is the second choice. The activities in the ring of fire are mainly caused by the movement of mantle rock through the cracks between tectonic plates. I hope my answer has come to your help. God bless and have a nice day ahead!
The movement of mantle rock through the cracks between tectonic plates
Our Earth is not a static planet. The crust, the part where we live, is above a more fluid componet, the mantle. Where the crust thin out, it is possible that the mantle comes to the surface, causing a series of phenomenon like volcano activities and earthquake. This is particularty visible in the Ring of Fire, because there a lot of those cracks in this zone.