The correct answer to your question is plates. The Earth's lithosphere, which consists of the crust and the uppermost part of the mantle, is broken up into about 30 large and small sections called tectonic plates. These plates float on the semi-fluid layer beneath them, known as the asthenosphere. The movement of these plates, driven by larger geological forces deep within the Earth, is responsible for various geological phenomena such as earthquakes, volcanic activity, and the formation of mountains. So, the plates are the correct answer that moves around on the asthenosphere.
