Please choose the correct answer to the question: Clams, oysters, and mussels eat plankton filtered from water. How would clams, oysters, and mussels most likely be affected if the amount of plankton in a large body of water was significantly reduced?

Answer1: They would increase in number. Answer2: They would find a new food source. Answer3: They would become prey to other animals. Answer4: They would compete for a limited food source.

Answer format: answer1/answer2/answer3/answer4