You are presented with the question "What do clams feed on?" and the following answer choices: 
- sand particles
 - jellyfish
 - Something made from fermented ricce
 - plankton and nonliving organic
 - minnows and other small fish
 - Something that is secreted in a shallow cup.
 - Something with a head, thorax, and abdomen
 - sub-units of species

Now knowing that bivalves feed on plankton and nonliving organic matter and clams and oysters are examples of bivalves, choose the best answer.


 

    plankton and nonliving organic     