Question

8.2.5 quiz: the rock cycle
which type of rock is pegmatite?
a. sedimentary
b. extrusive igneous
c. intrusive igneous
d. metamorphic

Explanation:

Pegmatite is formed from the slow cooling of magma deep within the Earth's crust. Intrusive igneous rocks form when magma cools slowly beneath the Earth's surface, allowing large crystals to develop. Extrusive igneous rocks form from lava that cools quickly on the Earth's surface. Sedimentary rocks form from the accumulation of sediments, and metamorphic rocks form from the alteration of existing rocks due to heat and pressure.

Answer:

C. Intrusive igneous