Diseases are broadly grouped into infectious and non-infectious diseases. In the list given below, identify infectious diseases.
i. Cancer
ii. Influenza
iii. Allergy
iv. Smallpox
(a) i and ii (b) ii and iii (c) iii and iv (d)ii and iv
The answer is the option (d) (ii) and (iv)
Explanation: Cancer and allergy are non-infectious diseases.