C. moving food through the body and transporting air through the body
Most of these I would advise you not to handle food with, but the most seriousness of these diseases is Typhoid Fever. Typhoid Fever is obtained by food an infectious person handles. The answer is C.
The answer to this question is that this are all common by
being x linked. X linked inheritance means that a disorder is manifested /
located in the x chromosomes. The following are the known X linked disorders
such as color blindness, hemophilia, duchenne muscular dystrophy, menkes
disease, and others.
