Recently, P : containing memorable letters of Churchill Q : a book R : has been published S : by a reputed publisher The Proper sequence should be:

PQRS
QPRS
QRPS
RQPS

The correct answer is: A. PQRS

The sentence is about a book that has been published recently. The book contains memorable letters of Churchill. The publisher is reputed.

The correct sequence is:

  • Recently, a book containing memorable letters of Churchill has been published by a reputed publisher.

The other options are incorrect because they do not follow the correct sequence of events.

Option B: QPRS

This option puts the publisher before the book. This is incorrect because the book was published before the publisher.

Option C: QRPS

This option puts the book before the letters. This is incorrect because the letters are contained in the book.

Option D: RQPS

This option puts the publisher before the letters. This is incorrect because the letters were written before the publisher.