Answer the following question given this paragraph: 

The majority of known elements are classified as metals. Metals are elements that are lustrous, or shiny. They are also good conductors of electricity and heat. Examples of metals include iron, gold, and copper. Fewer than 20 elements are classified as nonmetals. Nonmetals lack the properties of metals. Examples of nonmetals include oxygen, hydrogen, and sulfur. Certain other elements have properties of both metals and nonmetals. They are known as metalloids. Examples of metalloids include silicon and boron.


Q: What are the three classifications of elements?

 Choices:

- metals, non-metals and alkaloids

- metals, metaloids, and alkaloids

- alkaloids, metaloids, and non-metals

- metals, non-metals and metaloids

A:
metals, non-metals and metaloids
