The correct answer is: C. Chemically precipitated sedimentary rock
Gypsum is a sedimentary rock that is formed when calcium sulfate (CaSO4) is precipitated from water. This can happen when seawater evaporates, or when hot springs deposit calcium sulfate minerals. Gypsum is a soft, white rock that is often used in construction and as a fertilizer.
A. Mechanically formed sedimentary rocks are formed when pieces of other rocks are broken down and transported by water, wind, or ice. These pieces of rock are then deposited in layers, and over time they are cemented together to form a sedimentary rock.
B. Igneous rocks are formed when magma or lava cools and solidifies. Magma is molten rock that is found beneath the Earth’s surface. Lava is magma that has reached the Earth’s surface.
D. Metamorphic rocks are formed when existing rocks are subjected to heat and pressure. This can happen when rocks are buried deep underground, or when they are involved in mountain building.