Please choose the correct answer to the question: Plankton are tiny ocean organisms. The role of one type of plankton is to use the energy from the Sun to produce food that other animals eat. Which organism has the same role in the ocean as this type of plankton?

Answer1: seaweed Answer2: turtle Answer3: dolphin Answer4: crab

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