Direction: In the following questions, out of the four alternatives, CHOOSE the one which can be SUBSTITUTED for the given words/ sentence.
psychology (N.) : the SCIENTIFIC study of the human mind and how it influences BEHAVIOUR
physiology (N.) : the scientific study of the NORMAL functions of living things
sociology (N.) : the study and classification of human societies
philology (N.) : the scientific study of the development of language or of a particular language