Select the option that can be used as a one-word substitute for the given group of words.
A person who admires himself or herself too much, especially their appearance

Correct option is A

The correct one-word for the given group of words is (a) Narcissist.
A narcissist is a person who has an excessive interest in or admiration of themselves, especially their appearance. (Hindi meaning: आत्मप्रेमी व्यक्ति)
Example: Riya is such a narcissist that she stares at herself in every mirror she passes.
Meanings of the given other options:
· (b) Egoist: A person who is self-centered and values their own opinion too much. (अहंकारी)
· (c) Selfish: Concerned only with one's own benefit. (स्वार्थी)
· (d) Dictator: A ruler with total power, often oppressive. (तानाशाह)