Please choose the correct answer to the question: A goose needs to move to warmer states for the winter. Leaving its summer home, it heads out without a map, because it can always find the right way by using

Answer1: the World's great patterns Answer2: the Earth's magnetic patterns Answer3: a map it buys later on Answer4: a compass that points north

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