Two tectonic plates of different densities collide. which of the following could form at the plate boundary?

Volcano (volcanic arc), island (Island arc), trench and subduction zone

Explanation:

When two tectonic plates of different densities shares a convergent type of plate boundary, then the denser plate sinks below the lighter plate. Due to this, it forms a subduction zone above which there lies a trench. The subducting plate melts at larger depth, which allows the magma to rise up towards the surface in the over-riding plate. It results in the formation of volcanoes, islands, volcanic and island arcs. It also generates deep-focus earthquakes.

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