Fossils are generally found in:

The correct answer is Option (2) → Sedimentary rocks

Option (2) Sedimentary rocks — Correct. Fossils are the remains of hard parts of life-forms found in rocks. Rocks form sediments, laid one over the other through the history of the earth, and each sedimentary layer holds the fossils of its own time.

NCERT Extract:
What Are the Evidences for Evolution? – “… Fossils are remains of hard parts of life-forms found in rocks. Rocks form sediments and a cross-section of earth's crust indicates the arrangement of sediments one over the other during the long history of earth. Different-aged rock sediments contain fossils of different life-forms who probably died during the formation of the particular sediment.”