The correct answer is D. The crust of the Earth is a solid outer layer, between 3 and 30 miles thick, and separated into plates.
Explanation:
The earth's crust is the outermost solid part of the Earth. It represents 1% of the planet's volume, composed of minerals that form rocks. It is discontinuous due to the fact that it has tectonic plates that are on continuous movement. It is very dynamic with great geological activity. It has an average thickness of between 5 and 33 km on average. The outermost part of the upper mantle is firmly linked to the cortex, forming a compact set called lithosphere.
