Question

a tick and a dog have this type of relationship. mutualism neutralism commensalism parasitism

Explanation:

Parasitism is a relationship where one organism (the parasite) benefits at the expense of another (the host). A tick feeds on a dog's blood (benefits), while the dog is harmed (loses blood, may get infections). Mutualism is when both benefit (e.g., bees and flowers). Neutralism is no effect on each other. Commensalism is one benefits, the other is unaffected (e.g., barnacles on whales).

Answer:

parasitism