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.

in an effort to stop species extinction(P)/ and new trade restrictions(Q)/ representatives meet to discuss existing(R)/ every three years, government (S)