fossils are found in rocks. igneous metamorphic sedimentary

Brief Explanations:

Fossils are typically preserved in sedimentary rocks. Igneous rocks form from the cooling and solidification of magma or lava, which would destroy organic material. Metamorphic rocks are formed from pre - existing rocks under high pressure and temperature, also usually destroying fossils. Sedimentary rocks are formed from the accumulation and compaction of sediments, which can preserve organic remains over time.

Answer:

sedimentary