Please choose the correct answer to the question: Which of the following would be an example of tool use in the animal kingdom?

Answer1: a wolf using its sense of smell to track down prey Answer2: a crow displacing water with rocks to get good Answer3: a giant whale filtering plankton from water Answer4: An anteater using its long tongue to catch ants

Answer format: answer1/answer2/answer3/answer4
Answer: answer2