Directions: In the question given below, the first and sixth sentence are given in the beginning as S1 and S6. The middle four sentences have been jumbled up. These are labelled as P, Q, R and S. You are required to find out the proper sequence of the four sentences and mark it as your answer.

S₁ : We who live in the present day world are proud to call ourselves civilized. S₆ : In fact, science has added to our worries. P : But let us search our hearts and ask ourselves, 'Has science solved our problem?' Q : Is it because we live and dress better than our forefathers? R : Frankly speaking, the answer is 'No'. S: Of course, we have the advantages of the inventions of science which our ancestors had never known.