Which of the following is not a communicable disease?
(a) cholera (b) cancer (c) chickenpox (d) malaria
Communicable disease:
Diseases that are caused by a pathogen which can be transmitted from a diseased individual to a healthy individual and affects the healthy individual is called a communicable disease.
The microorganisms that cause these diseases are known as pathogens and include varieties bacteria, viruses, protozoa and fungi. Cholera is caused by a pathogenic bacteria, chickenpox is caused due to a viral infection and malaria is caused due to a protozoan.
Cancer is a non-communicable disease as it is caused by defective genetic character of the individual and it is not transmitted from an individual affected by cancer to a healthy individual.
Final Answer: The non-communicable disease is (b) cancer.