Please choose the correct answer to the question: A group of students are observing a fish tank for a school assignment. The group is to share the observations with the class. Which statement about observations is true?

Answer1: Observations should always be recorded. Answer2: Observations should be collected only once. Answer3: Observations are only collected by scientists. Answer4: Observations are always correct if used in a chart.

Answer format: answer1/answer2/answer3/answer4