The correct option is D 1 - A, 2 - C, 3 - B
∙ Acute diseases: Diseases that persist only for a very short period.
E.g., Common cold is a viral disease that affects the nose, ears, and bronchial tubes. Symptoms subside within a few days.
∙ Chronic diseases: Diseases whose symptoms prolong for several years or even a lifetime.
E.g., AIDS is a viral condition that weakens the immune system of a person such that he/she can not fight off any kind of infection.
∙ Congenital disorders, also known as birth defects, are the structural or functional abnormalities caused due to error in genetic codes.
E.g., Haemophilia is a condition impairs the ability of the body to clot the blood. As a result, even a small cut can cause uncontrollable bleeding.