Q: What is the molten material deep within the earth?


Read this paragraph and choose the correct option from the provided answers:

Cooling and forming crystals. Deep within the Earth, temperatures can get hot enough to melt rock. This molten material is called magma. As it cools, crystals grow, forming an igneous rock. The crystals will grow larger if the magma cools slowly, as it does if it remains deep within the Earth. If the magma cools quickly, the crystals will be very small.

 Choices:

- volcanic mass

- crystals

- lava

- magma


A:
magma