They would increase in number. They would find a new food source. They would become prey to other animals. They would compete for a limited food source.
I am hesitating between 4 options to answer the following question, which option should I choose?
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?
Possibilities:
- They would increase in number.
- They would find a new food source.
- They would become prey to other animals.
- They would compete for a limited food source.

They would compete for a limited food source.