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DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 The food components gradually get digested as food travels through the various components of alimentary canal. The digested food can pass into the blood vessels in the walls of the small intestine. The part of our body which contains salivary glands which secrete saliva is

A) Mouth          

B) tongue

C) Teeth                          

D) all of these