How would you add the Strings "cat", "dog" and "bird" to an ArrayList named animals?

1.		animals["cat"]; animals["dog"]; animals["bird"];
2.		animals.add["cat"]; animals.add["dog"]; animals.add["bird"];
3.		animals.add("cat"); animals.add("dog"); animals.add("bird");
4.		animals.add("cat","dog","bird");