What is the probable cause of formation of world's biggest and most active volcanoes in Hawaii, as per a recent study?

Collision of Pacific Plate with North American Plate three million years ago.

Shift in the Pacific plate's direction three million years ago.

Breaking away of Greenland from North American Plate two million years ago.

Shift in the North American plate's direction three million years ago.

What is the probable cause of formation of world's biggest and most ac

1.	What is the probable cause of formation of world's biggest and most active volcanoes in Hawaii, as per a recent study?
A.	Shift in the Pacific plate's direction three million years ago.
B.	Collision of Pacific Plate with North American Plate three million years ago.
C.	Breaking away of Greenland from North American Plate two million years ago.
D.	Shift in the North American plate's direction three million years ago.
Answer» B. Collision of Pacific Plate with North American Plate three million years ago.