1 Answers
Option 3 : QRSP
The correct sequence cannot begin with R as the use of pronoun it indicates that the subject has been introduced in the preceding sentence. Thus, we can eliminate option 4.
With Q as the introductory sentence, the next sentence should tell us more about the GST. Thus, R follows. The following sentences should tell us about the benefits of enacting the GST. So, S and P follow. The word also used in P indicates that the pattern should be SP (and not PS) because also is used to provide additional information on a similar topic being discussed. The information provided by S is further augmented by P.
Thus, the correct sequence is QRSP making option 3 the correct answer.