Cource of a disease process without any' intervention is the definition of -: (A) Spectrum of disease, (B) Epidemiology of disease, (C) Natural history of disease, (D) Iceberg phenonenon
Answer is C. Ans. is 'c' i.e., Natural history of disease o Natural history of disease signifies the way in which a disease evolves over time from the earliest stage of its prepathogenesis phase to its termination as recovery, disability or death, in the absence of treatment or prevention.