Question

13 trenches may form when ____ come together. two fault lines one oceanic and one continental crust two continental crusts two oceanic crusts skip 12/49 complete

Explanation:

Trenches form at convergent - plate boundaries. When one oceanic and one continental crust converge, the denser oceanic crust subducts beneath the continental crust, creating a trench. Fault lines are related to earthquakes and not the formation of trenches. When two continental crusts collide, mountains are formed. When two oceanic crusts converge, one subducts and can form volcanic arcs and trenches, but the most common association for trench - formation is between an oceanic and a continental crust.

Answer:

one oceanic and one continental crust