Amongst three layers of earth interior. Which layer do you think is the most important one? justify​

The crust is the most widely studied and understood. Mantle is hotter and capable of flowing. The outer and inner core are much hotter with great pressures that you can be squeezed into a ball smaller than a marble if you are able to go in the center of the Earth.

answer: option d.

explanation:

answer at the divergent plate boundary in the middle of the ocean;