Choose the most logical order of sentences from among the given choices to construct a coherent paragraph:(a) A good college is essential for a successful career and admissions are based on marks. (b) The marks-based system followed by all the boards in the country recognises only a small percentage of students as successful. (c) The marks one scores in the crucial board exams dictate the path his life takes. (d) Anyone scoring below a certain percentage is automatically branded a 'failure'. (d) So if you cannot make it into the best college, your career is over even before it has started.

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.