The answer is: "testimonials" .
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" <span>Health care manufacturers and health foods often rely on statements or personal appearances called <u> testimonials </u><u /> to sell their products."
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<span>An extremely low calcium level may cause tingling often in the lips, tongue, fingers, and feet, muscle aches, spasms of the muscles in the throat leading to difficulty breathing, stiffening and spasms of muscles , seizures, and abnormal heart rhythms.</span>
Answer:
b- Tell them to stop because its not in any way harmful
