Directions: This question 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 five sequences, namely (1), (2), (3), (4) and (5). You are required to re-arrange the jumbled parts of the sentence and mark your response accordingly.

to avoid fatal diseases (P)/ a balanced diet and regular exercise (Q)/ are necessary (R)/ to maintain optimal health (S).