Question

how do minerals form from magma?
by rapidly melting in earths core
by crystallizing as magma or lava cools
by dissolving in ocean water
by breaking down into smaller particles

Explanation:

Minerals form from magma when the hot, molten rock (magma or lava, when it reaches the surface) cools down. As the temperature drops, the elements and compounds in the magma lose energy and arrange themselves into ordered, solid crystalline structures, which are minerals. The other options are incorrect: melting creates magma, not minerals; dissolving in ocean water forms chemical sedimentary minerals, not magma-derived ones; breaking down particles is weathering, not magma mineral formation.

Answer:

By crystallizing as magma or lava cools