Currently, the western margin of the north american plate is: a) an active plate margin, b) passive plate margin, c) transform margin c) a failed rift. e evidence for the closure of the iapetus ocean and ancient ocean crust can be found as 'ophiolites' in newfoundland. a) true b) false

An active plate margin,   a  True.

Explanation:

Currently, it's moving towards the western side and at the speed of 0.98 inch/year. its causing the pacific plate to shrink.

Some 650 million years ago the Scandinavian plates were interpreted as those coming out from the plates of Iapetus ocean. The Newfoundland and the labrador are believed to have been formed during the Iapetus oceanic plates formed as a consequence of the extension of ancient tectonics in the Baltic.