Please choose the correct answer to the question: A student provides the following directions for brushing teeth: • Turn on the water. • Fill the glass with water and leave the water running. • Put toothpaste on the toothbrush. • Brush for two minutes. • Rinse mouth with the water from the glass. • Rinse the toothbrush with the running water. • Turn off the water. Which change in these directions would conserve the most water?

Answer1: Brush for three minutes. Answer2: Turn the water off before brushing. Answer3: Rinse mouth with the running water. Answer4: Use less toothpaste on the toothbrush.

Answer format: answer1/answer2/answer3/answer4