____ is the development of cyanosis in the peripheral parts of the body such as the nail beds, palms of the hands, and soles of the feet.

What is the more common cause of conductive deafness in children?

A) Otitis media B) Otitis externa C) Media inflammation D) Otitis cochlea

Which of the following would be considered a reservoir in the chain of infection?

A) Animals B) Water C) Vectors D) All of the above