An example of a communicable disease is cancer.
chronic respiratory disease.
diabetes.
giardiasis.

It is D because communicable diseases, also known as infectious diseases or transmissible diseases, are illnesses that result from the infection, presence and growth of pathogenic (capable of causing disease) biologic agents in an individual human or other animal host.

SO with the procces of elemination you can see that you can't contract cancer because that is something that can be inherited. Chronic Respiratory diesase can be inherited or developed throughout the years same as diabetes. Hence the answer being D

where is the diagram?

if you insert the diagram ill be able to you

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.