Question

humans and dogs often have a relationship in which the dog provides protection and companionship in return for food and shelter. what type of relationship does this illustrate?
a. predator/prey
b. commensalism
c. parasitism
d. mutualism

Explanation:

Mutualism is a symbiotic relationship where both species benefit. In the relationship between humans and dogs described, dogs get food and shelter (benefit) and humans get protection and companionship (benefit). Predator - prey involves one organism hunting another. Commensalism is when one organism benefits and the other is neither helped nor harmed. Parasitism is when one organism benefits at the expense of the other.

Answer:

D. mutualism