Please answer the following question: Answer the following question given this paragraph: Some volcanoes form over active hotspots . Scientists count about 50 hotspots on the Earth. Hotspots lie directly above a column of hot rock called a mantle plume . Mantle plumes continuously bring hot rock up from the mantle toward the crust ( Figure below ). The rock melts due to the release of pressure. Q: What is the column of hot rock that continuously brings hot rock up from the mantle toward the crust? Choices: - volcanic vent - hotspot - flue - mantle plume A:
A:
mantle plume