Question

The layer of the earth where mantle convection occurs and on which the earth's crust rests is the

Answer 1

In the passage this question was provided for, you should have been able to locate the fallowing text: "the outer layer of the mantle; made up of plastic or semi-molten rock" and many others to imply this answer.

Answer: Asthenosphere

Answer 2

asthenosphere is the layer where mantle convection occurs and on which the earth crust lies.

hope it helps u ......