Jimmy and Joanna were walking in their backyard and noticed a mushroom growing on the outside of a dead tree. Jimmy claimed that the mushroom was a plant, but Joanna said that it was not a plant, but a fungus.
In this case, what evidence BEST supports Joanna's claim?
A) The mushroom was a producer.
B) The mushroom was a autotroph.
C) The mushroom was a decomposer.
D) The mushroom was a heterotroph.
.