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 orbit the sun in long, elliptical paths / (Q) a number of small, icy objects known as comets are found / (R) which are made up of dust, ice, and rocks / (S) in the outer reaches of the solar system,