the layer representing the mantle the layer representing the outer core the layer representing the inner core the layer representing the crust
I gave my students this multiple choice question: A student uses clay to construct a model of Earth. Which layer of the model should be the thinnest layer?

Only one answer is correct among these 4 choices:
- the layer representing the mantle
- the layer representing the outer core
- the layer representing the inner core
- the layer representing the crust

Could you tell me which one is correct?

the layer representing the crust