Please choose the correct answer to the question: Sand and iron particles that are similar in size and color are mixed together in a beaker. What would be the best method of separating the particles?

Answer1: Use tweezers to separate them. Answer2: Use a magnet to separate them. Answer3: Add water to the mixture. Answer4: Pour the mixture into a filter.

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