Answer the following question given this paragraph: 

A species is a unique type of organism. Members of a species can interbreed and produce offspring that can breed (they are fertile). Organisms that are not in the same species cannot do this. Examples of species include humans, lions, and redwood trees. Can you name other examples?.


Q: A unique type of organism is also known as what?

 Choices:

- taxonomy

- parasites

- element

- species

A:
species
