Directions : Each of the following items in this section consists of a sentence, parts of which have been jumbled. These parts have been labelled as P, Q, R and S. Given below each sentence are four sequences, namely (a), (b), (c) and (d). You are required to re-arrange the jumbled parts of the sentence and mark your response accordingly.

across the world (P) / in the Middle East has changed (Q) / the discovery of petroleum (R) / the lifestyle of the people (S)