You probably know that it is a good idea to brush your teeth every day. What does this do that helps prevent tooth decay?

Responses
A It whitens your teeth.It whitens your teeth.
B It freshens your breath.It freshens your breath.
C Helps control the bacteria that are in your mouth.Helps control the bacteria that are in your mouth.
D It stops the sugar you've eaten from harming your teeth.

C Helps control the bacteria that are in your mouth.