Question: A research scientist repeatedly observes a bird avoiding a specific butterfly species even  though it eats other types of butterflies. Which statement most likely explains the behavior of the bird?

  Options: 
 A. The behavior is a random act.
 B. The behavior is the result of a genetic mutation.
 C. The behavior is inherited from the bird's parents.
 D. The behavior is learned over the lifetime of the bird. 
Answer: D