Which example is an organism?

a. white blood cell

b. mushroom

c. diamond

d. rock

B. A mushroom. It is alive.

Not A because it is only a part of an organism

Not C or D because they are not alive. An organism must be able to live on its own, eat somehow (in this case the mushroom is a decomposer), and reproduce. Mushrooms release spores which are like fungal seeds.

B.) Mushroom is an organisms among them.