The grains found in igneous rock:

a. are cemented together

c. are large

b. form an interlocking texture

d. will display in one-size only

Option c. are large

Igneous rocks are crystalline solids which are formed after the magma cools. The sizes vary greatly depending on how quickly the magma cooled. The slower the cooling, the larger the crystals in the final rock. They cooled at depth in the crust where they were insulated by layers of rock and sediment.