A species of insect is newly introduced into the United States from the Philippines. This insect becomes established, laying its eggs on the leaves of oak trees. How can a biologist distinguish if the relationship between the insect and the oak tree is
commensalism, mutualism, or parasitism?

A) If the insect benefits, the relationship is parasitism.

B) If both the insect and the tree benefit, the relationship is commensalism

C) If the insect benefits and the tree neither benefits nor is harmed, the
relationship is mutualism.

D) If the insect benefits and the tree neither benefits nor is harmed, the
relationship is commensalism.