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.

(P) and has opened up new possibilities for trade and tourism / (Q) in the early 20th century / (R) has made long distance travel faster and more efficient / (S) the development of the airplane