How are igneous rocks formed?
A. Lava or magma heats up and crystallizes.
B. Lava or magma cools and then crystallizes.
C. Glaciers melt.
D. Hail falls and melts.
It is B. Glaciers melting just makes water. Hail is just water too. Lava or magma don't heat up because it is already too hot. It has to cool down to turn solid.
