What type of disease may not be spread from person to person?

The correct choice refers to non-communicable diseases, which are characterized by the fact that they cannot be transmitted from one person to another. These diseases typically arise from a combination of genetic, environmental, and lifestyle factors. Examples include heart disease, diabetes, and cancer, all of which develop due to influences such as diet, physical activity, and genetic predisposition rather than through direct contact or infection from another person.

In contrast, communicable and infectious diseases, as well as contagious diseases, can be easily spread between individuals through various means, such as physical contact, airborne transmission, or through bodily fluids. This fundamental distinction highlights why non-communicable diseases are categorized separately; they fundamentally lack the capacity for person-to-person transmission.