[Solved] One of the most serious invasion of privacy issues with respect to e-cornrnerce is A)access to pornography sites. B)downloading copyrighted material. C)collection and use of personal information. D)sharing medical information with unauthorized users. Singing: The act of producing musical sounds with the voice, often including the use of words. Otic Irrigation: A procedure for cleaning or medicating the ear canal by flushing it with a liquid solution. Irrigation Solution: A fluid used medically to clean, flush, or bathe a bodily part, often used in surgery or wound care. Ear Canal: The tubular passage running from the outer ear to the eardrum, responsible for directing sound waves to the middle ear.