Question

rock can be changed directly into ____ rock with the application of heat and pressure.
oa. sedimentary, igneous
ob. igneous, sedimentary
oc. metamorphic, sedimentary
od. sedimentary, metamorphic

Explanation:

Sedimentary rock can be transformed into metamorphic rock under heat and pressure. Igneous rock forms from cooling magma or lava, not directly from sedimentary rock by heat - pressure alone. Metamorphic rocks are formed by the alteration of existing rocks (including sedimentary rocks) due to high - temperature and high - pressure conditions.

Answer:

D. Sedimentary, metamorphic