Correct Option (D)
All four statements accurately describe characteristics of sedimentary rocks.
- Sedimentary rocks are formed at the Earth's surface through the accumulation and cementation of sediments. These sediments are primarily transported and deposited by agents of the hydrological system, such as rivers, lakes, and oceans, as well as by wind and glaciers.
- The formation process begins with the weathering and erosion of pre-existing rocks (igneous, metamorphic, or other sedimentary rocks), which break down into smaller fragments or dissolved materials that are then transported and deposited.
- Sedimentary rocks are the primary rock type where fossils are found. This is because organic remains can be preserved within the accumulating layers of sediment before they are lithified into rock, unlike in igneous or most metamorphic rocks.
- These rocks typically occur in distinct layers or strata. This layered structure is a result of the sequential deposition of sediments over time, with each layer representing a different depositional event or period.
Incorrect Options
Options A, B, and C are incorrect because they omit one or more of the correct statements regarding the formation and characteristics of sedimentary rocks.