Select the option that can be used as a one-word substitute for the given group of words.
A short section (as of a book) that leads to or explains the main part.

Correct option is A

The correct one-word for the given group of words is Foreword.
Explanation: A foreword is a short introductory section in a book, usually written by someone other than the author, explaining the purpose or giving context. (Hindi meaning: भूमिका)
Example: The foreword of the book was written by a renowned historian.
Meanings of the given other options:
· Conclusion: The final part of something (समाप्ति)
· Postscript: An additional remark at the end of a letter or document (परिशिष्ट)
· Paraphrase: A restatement of a text using different words (भावानुवाद)