Which of the following best describes non-communicable diseases?

Non-communicable diseases are best described as chronic diseases that cannot be transmitted between individuals. These diseases are often long-lasting and are typically linked to lifestyle factors, environmental influences, or genetic predisposition rather than infectious agents. Examples of non-communicable diseases include heart disease, diabetes, and cancer.

This distinguishes them from communicable diseases, which are contagious and can spread from person to person through direct or indirect contact. Non-communicable diseases do not have the capacity to be passed on in this manner, making option C the most accurate description. While genetic factors can play a role in some non-communicable diseases, they are often influenced by a combination of lifestyle and environmental factors, so the claim that they are caused solely by genetic factors does not encompass the broader spectrum of causes.