Paper wasps build their nest on an ash tree branch. They scrape wood from

the tree and chew it to make pulp for the nest. The nest itself and the process
of making it do not harm the tree. What kind of relationship exists between
the paper wasps and the ash tree?
A. Commensalism
B. Mutualism
C. Predation
D. Parasitism

The correct answer is A. Commensalism. In this relationship, the paper wasps benefit from building their nest on the ash tree branch without causing any harm to the tree.