How was the Olympic Peninsula formed?

Question

(1 point)
Responses

by subduction, which resulted in an excessive amount of volcanic activity
by subduction, which resulted in an excessive amount of volcanic activity

through volcanic activity off the coast of Washington that led to the buildup of Pacific plates
through volcanic activity off the coast of Washington that led to the buildup of Pacific plates

when a large chunk of the ocean floor was lifted up and attached to Washington’s coastline
when a large chunk of the ocean floor was lifted up and attached to Washington’s coastline

when shifting plates caused a large section of land to break away from Washington’s coast

Answer 1

by subduction, which resulted in an excessive amount of volcanic activity