Q: What is formed when hot lava cools?


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

Minerals are made by natural processes. The processes that make minerals happen in or on the Earth. For example, when hot lava cools, mineral crystals form. Minerals also precipitate from water. Some minerals grow when rocks are exposed to high pressures and temperatures.

 Choices:

- hydrogen crystals

- lava rock

- magma crystals

- mineral crystals


A:
mineral crystals