Final answer:
Nancy's disease is contagious. Contagious diseases are infectious and can spread from person to person, contrasting noncommunicable diseases which are not spread through interpersonal contact.
Step-by-step explanation:
Nancy's disease is contagious. A contagious disease, also known as an infectious disease, is one that can be easily transmitted from person to person. Diseases such as the common cold, flu, and tuberculosis are examples of contagious diseases because they can spread through various means such as airborne droplets, physical contact, or shared surfaces. In contrast, noncommunicable diseases, like diabetes or most types of cancer, are not spread from person to person and often result from genetic, environmental, or lifestyle factors. Toxic diseases are those caused by toxic substances, and occupational diseases are conditions that are primarily caused by the nature of someone's work.
A communicable disease like the one Nancy has requires her to avoid contact with others to prevent spreading the illness. Proper hygiene practices, such as handwashing, and isolating when sick are critical measures to prevent the transmission of such diseases.