Answer:
C or D
Step-by-step explanation:
❌Mutualism - a relationship between two species of organisms in which both benefit from the association.
❌Predation - a relation between animals in which one organism captures and feeds on others. A tree is not an animal, so it's not this.
Parasitism - a relationship between two species of animals or plants in which one benefits at the expense of the other, sometimes without killing the host organism. (The tree is not harmed, so I don't beleive it is this one)
Commensalism - a relationship between individuals of two species in which one species benefits from the other without either harming or benefiting the latter.