Question

what are tectonic plates composed of? lithosphere magma magnetic rock

Explanation:

Tectonic plates are large sections of the Earth's crust and upper mantle. The lithosphere is the rigid outer layer of the Earth, which includes the crust and the uppermost part of the mantle. Magma is molten rock beneath the Earth's surface, and magnetic rock is a type of rock with magnetic properties. Since tectonic plates are part of the lithosphere, they are composed of lithosphere.

Answer:

lithosphere