Question

Which of the following statements about the physical geography of North America is true?

A. The Mississippi drainage basin is the fifth largest in the world.
B. The largest tributary of the Mississippi is the Arkansas River.
C. The most geologically active region of North America is found along the West Coast.
D. The ancient rock of the Canadian Shield covers about one-fourth of Canada.

Answer 1

The correct answer is
C. The most geologically active region of North America is found along the West Coast.

More precisely, it is around cities like San Francisco that the earth is most geologically active. That's why there's things like earthquakes here.