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Option A, Saliva

Explanation:

a.) Saliva = watery fluid, secreted into the mouth by the salivary glands, that functions in the tasting, chewing, and swallowing of food.

b.) Mucus = a thick liquid produced inside the nose and other parts of the body.

c.) The Tongue = the large, soft piece of flesh in the mouth that you can move, and is used for tasting, speaking.

d.) The Epiglottis =  a thin cartilaginous flap that covers the entrance to the larynx during swallowing, preventing food from entering the trachea.

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A

Explanation: Have a great day!!

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the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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bioteacher101