Choose the most logical order of sentences from among the given choices to construct a coherent paragraph:(a) As the temperature rises, staying hydrated can become a greater challenge for people exercising both indoors and out. (b) Several things can influence this process, including age, gender, physical conditioning. humidity and a lack of sufficient fluids. (c) In hot weather, individuals can lose as much as two quarts of sweat per hour. (d) As we age, we have a lower perceived level of thirst in response to fluid loss and early stages of dehydration. (e) If not replenished, this can lead to dehydration, heat exhaustion and even heatstroke.

Different words form a sentence and convey their meaning only when arranged in a proper order. A Paragraph is formed from sentences, it will convey its true meaning and purpose only when the sentences are arranged in a proper manner.    
In the following questions, some parts of the sentence have been jumbled up. You are required to rearrange these parts which are labelled P, Q, R and S to produce the correct sentence.