Which of the following are the three types of rock?

The three types of rock are classified as igneous, sedimentary, and metamorphic. This classification is based on the processes that lead to their formation.

Igneous rocks form from the cooling and solidification of magma or lava. Examples include granite and basalt. These rocks often have a crystalline structure and vary in texture depending on how quickly they cooled.

Sedimentary rocks are created from the accumulation and compression of mineral and organic particles. They often contain fossils and are formed in layers, with common examples including limestone and sandstone.

Metamorphic rocks arise from the transformation of existing rock types (igneous, sedimentary, or other metamorphic rocks) due to heat, pressure, or chemically active fluids. This process can change the texture, mineralogy, or chemical composition of the original rock. Examples include schist and marble.

The other choices list different types of rocks or materials that do not encompass the full classification scheme, such as types of sediment rather than rock classifications or specific rock types without addressing their classification.