When sedimentary rock is exposed to heat and pressure, what does it change into? a. magma c. sedimentary rock b. igneous rock d. metamorphic rock

c

explanation:

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.