Answer the following question given this paragraph: 

Carbonate minerals are often found where seas once covered the land. Some carbonate minerals are very common. Calcite contains calcium, carbon, and oxygen. Have you ever been in a limestone cave or seen a marble tile? Calcite is in both limestone and marble. Azurite and malachite are also carbonate minerals. They contain copper instead of calcium. They are not as common as calcite. Malachite and azurite are used in jewelry; as you can see, they are very colorful ( Figure below ).


Q: What type of minerals are often found where seas once covered the land?

 Choices:

- magnesium

- crystals

- sea salt

- carbonate

A:
carbonate
