Please choose the correct answer to the 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?

Answer1: The behavior is a random act. Answer2: The behavior is the result of a genetic mutation. Answer3: The behavior is inherited from the bird's parents. Answer4: The behavior is learned over the lifetime of the bird.

Answer format: answer1/answer2/answer3/answer4