Marina has been onboard the research vessel gustavo, off the coast of chile, for several weeks now. she is measuring the depth of a very deep trench in the ocean that runs parallel to the coastline. in the distance, she notes a great mountain range on the mainland. suddenly, she is notified that a submarine earthquake just occurred below the trench, generating a tsunami. as marina puts on her lifejacket, she recalls the type of plate boundary nearby that led to the trench formation. based on the description given, what type of plate boundary is near the area marina has been studying? rift valley transform divergent convergent