Question

What is molten rock outside Earth from a volcanic eruption called?

Answer 1

B: Lava
molten rock is considered Lava outside of a volcanoe because when it is in the volcanoe by the temperature being excessively hot it's called Magma. then when it leaves out of a vent in the volcanoe by it rushing down the volcanoe it is cooling down do to the amount of oxygen that is being consumed by Lava.

Answer 2

It is called magma when in is under the earths crust, but above the surface it is called lava. So the answer would be "B."