Producers of many mouthwash brands claim that using mouthwash prevents tooth decay. what is the best conclusion regarding these mouthwash brands and bacteria in the mouth?
a. mouthwash contains ingredients that kill harmful bacteria.
b. mouthwash contains bacteria that produce oxygen.
c. mouthwash does not really work because the growth of harmful bacteria cannot be prevented.
d. mouthwash does not really work because bacteria is not known to directly cause tooth decay.

answer: a.mouthwash contains ingredients that kill harmful bacteria.

explanation:

a mouthwash is a liquid that is used for rinsing and gargling the mouth. it is a typical antiseptic liquid used for cleaning the teeth and mouth. the main purpose of the mouthwash is to get rid of the bacteria and food contaminants present in the mouth. it provides a good refreshes the mouth and prevents foul odor and bacterial growth.

it is typically composed of chemicals such as alcohol, fluorides, essential oils, cetylpyridinium chloride, triclosan and chlorhexidine.

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it is b

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