Fossils are generally found in:

Sedimentary rocks

The correct answer is Option (2)- Sedimentary rocks

Fossils are indeed the preserved remains of prehistoric animals and plants. They are typically found in sedimentary rocks, and this is due to a process called fossilization. When organisms die, their bodies are often covered by sediments like mud and sand. Over time, these sediments accumulate and become compacted, eventually turning into sedimentary rocks. The gradual sedimentation and relatively low pressure in the formation of sedimentary rocks are crucial factors that contribute to the effective preservation of these remains. Fossils offer valuable insights into Earth's history and the evolution of life on our planet.

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. Some of them appear similar to modern organisms. They represent extinct organisms (e.g., Dinosaurs). A study of fossils in different sedimentary layers indicates the geological period in which they existed. The study showed that life-forms varied over time and certain life forms are restricted to certain geological time- spans. Hence, new forms of life have arisen at different times in the history of earth. All this is called paleontological evidence.