Please choose the correct answer to the question: A class is modeling the differences between a unicellular organism and a multicellular organism. Which example is a model of a unicellular organism?

Answer1: a student passing out water to a group Answer2: a student getting cereal from the cabinet Answer3: two students collecting trash from a group Answer4: four students working together to move a desk

Answer format: answer1/answer2/answer3/answer4