Question

the aleutian islands in alaska formed from ____ plates colliding.
continental - continental
oceanic - oceanic
none of the answers listed
oceanic - continental

Explanation:

The Aleutian Islands formed from the collision of an oceanic - oceanic plate boundary. The Pacific Plate (oceanic) subducts beneath the North American Plate (in this region with an oceanic part), leading to volcanic activity and island - arc formation.

Answer:

oceanic - oceanic