I think its D im not sure hope this helped
Answer:
(A) True
Explanation:
The Cascadia subduction zone is 1,100 kilometers long, and its characteristics of youthful oceanic plate and strong coupling with the overriding plate are similar to situations in southwestern Japan and southern Chile where very large earthquakes have occurred. The Cascadia subduction zone is a convergent plate boundary that stretches from Northern Vancouver Island to Cape Mendocino California, It results from the subduction of the Juan de Fuca Plate beneath the North American plate. The Cascadia subduction zone is stable with no significant seismic activity.
How much degress are they
