Question: Hookworms live inside the intestines of dogs. As the dog eats, the hookworms consume partially digested food. As a result of this nutrient diversion, the dog can become malnourished and weakened. Which best describes the relationship between the hookworms and the dog?

  Options: 
 A. a parasitic relationship
 B. a mutualistic relationship
 C. a predator-prey relationship
 D. a producer-consumer relationship
Answer: A