Select the option that can be used as a one-word substitute for the given group of words.
The study of human mind and behaviour

Correct option is D

The correct one-word for the given group of words is (d) Psychology.
Psychology is the scientific study of the human mind and behavior. It deals with how people think, feel, and act. (Hindi: मानव मस्तिष्क और व्यवहार का अध्ययन)
Example: She is pursuing a degree in psychology to become a therapist.
Meanings of the given other options:
· Option (a) Paediatrics: The branch of medicine dealing with children and their diseases (Hindi: बच्चों से संबंधित चिकित्सा विज्ञान)
· Option (b) Botany: The scientific study of plants (Hindi: वनस्पति विज्ञान)
· Option (c) Physiology: The study of how the human body and other organisms function (Hindi: शरीर क्रिया विज्ञान)