What's burning in California right now

The primary agent of contact metamorphism is

Canada plays an important role in the global community in all of the following ways except by a. acting as a superpower with influence over europe and asia. b. promoting arms control and disarmament. c. working with the commonwealth of nations to promote trade. d. promoting trade with japan and other asian countries.

Witch of the following types of boundaries is most likely to result in a subduction zone