Select the option that can be used as a one-word substitute for the given group of words.
The examination or observation of one's own mental and emotional processes

Correct option is C

The correct one-word for the given group of words is (c) Introspection.
Introspection – The process of examining one’s own thoughts and feelings. (Hindi: आत्मनिरीक्षण)
Example: After the argument, she went into deep introspection to understand her reaction.
Meanings of the given other options:
· (a) Valuation – estimating worth (मूल्यांकन)
· (b) Inspection – close examination (निरीक्षण)
· (d) Assessment – evaluation or appraisal (मूल्यांकन)