Question

The theory of _____ suggests that the crust of the earth moves about on the upper mantle.

A : Pangaea
B : convection
C : volcanism
D : plate tectonics

Answer 1

The correct answer is plate tectonics. This theory encompases many different explanations for litosphere behavior which in turn means that it also encompases the theory that the crust moves about on the upper mantle. It also explains how continents are formed and how mountains grow and how tectonic plates hit each other and many other things.

Answer 2

The theory of (D) plate tectonics suggests that the crust of the earth moves about on the upper mantle.

Hope this helps!