Final answer:
The correct answer is d. Convergent, solidifies. Subduction occurs at convergent plate boundaries, where one tectonic plate descends beneath another into Earth's mantle. This process often forms volcanoes.
Step-by-step explanation:
The correct answer is d. Convergent, solidifies.
Subduction occurs at convergent plate boundaries, where one tectonic plate descends beneath another into Earth's mantle.
This process often forms volcanoes. When the subducting plate descends, the hydrated minerals in its oceanic crust become unstable and release water. This water lowers the melting temperature of the mantle, leading to the production of magma.