What is TRUE of the earth's crust in midocean?

Question

A. It is always solid and thin relative to the continents.
B. It may have rifts through which molten rock rises and spreads out.
C. It may have rifts through which the ocean floors sink downward.
D. It is always solid and thick relative to the continents.

Answer 1

B. It may have rifts through which molten rock rises and spreads out.
Just ignore that little man behind the curtain who answered E. He thinks he is the Great and Powerful Wizard of Oz.

Answer 2

E. It's underwater.