When molten rock undergoes crystallization above ground, what type of rock results?
a. intrusive igneous rock
b. extrusive igneous rock
c. metamorphic rock
d. sedimentary rock

Answer;

-Extrusive igneous rock

When molten rock undergoes crystallization above ground, it results to an extrusive rock.

Explanation;

-Crystallization is one of the three processes that change one rock to another in the rock cycle, other are; metamorphism, and erosion and sedimentation.

-Igneous rocks are rocks formed from the crystallization of a liquid (molten rock). Igneous rocks may be divided into two categories. Intrusive or plutonic rocks crystallize from magma beneath the earth's surface.