Question

which of the following can form at a subduction zone when magma breaks through the crust and rises to the surface?
ocean trench
tsunami
earthquake
volcano

Explanation:

At a subduction zone, when magma breaks through the crust and rises to the surface, a volcano forms. Ocean trenches are formed by subduction itself. Tsunamis are usually caused by large - scale displacement of water, often due to earthquakes. Earthquakes are the result of sudden release of energy in the Earth's crust.

Answer:

volcano