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                              Q:
                           
                           
                                                      | A) contains fluoride to harden the tooth enamel | B) moistens food and helps stick it together to make it easier to swallow | 
| C) begins the chemical breakdown of starches | D) helps clean the mouth | 
                              Answer:   A) contains fluoride to harden the tooth enamel
                              
                                                            
                              
Explanation:
                               
                           
                           Explanation:
Saliva is produced by the salivary gland which helps in food digestion.
Option A) contains fluoride to harden the tooth enamel is not the function of saliva.
 
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