Classification - Verbal and Reasoning

Directions to SolveIn each of the following questions, certain pairs of words are given, out of which the words in all pairs except one, bear a certain common relationship. Choose the pair in which the words are differently related.
Q1:

Choose the pair in which the words are differently related from the rest.

A Malaria : Protozoa

B Yeast: Fungi

C Typhoid : Bacteria

D Polio : Virus

ANS:B - Yeast: Fungi

Explanation: In all other pairs, first is the disease caused by the second.