Convergent plate boundaries can form which of the following? Rift Valleys
Deep Ocean Trenches
Mountains
Volcanic Island Arcs
New Ocean Floor

Deep Ocean Trenches, Volcanic Island Arcs and mountains

Explanation:

At a convergent plate boundary two plates collides with one another. Based on the type of plate, different features can form at such a margin.

In a continental - continental crust collision, both plates have the same density so, they build up on collision to form a mountain. In an oceanic - continental crust convergence; the oceanic plate is denser and it subducts. This leads to the formation of trenches. Also, here, the subducted plate will melt and a crack within the crust can allow for the melt to reach the surface and solidify to form volcanic Island arcs. Oceanic - oceanic crust convergence is also known.

The answer is observations and interpreting.