Each item consists of six sentences of a passage. The first and sixth sentences are given in the beginning as S1 and S6. The middle four sentences in each have been jumbled up and labelled as P, Q, R and S. You are required to find the proper sequence of the four sentences and mark your response accordingly on the Answer Sheet.

S1 :The Nobel Prize for Economics in 2018 was awarded to Paul Romer and William Nordhaus for their work in two separate areas : economic growth and environmental economics respectively.
S6 :Among recent winners of Nobel Prize in Economics, it’s hard to think of one issue which is more topical and relevant to India.
P :But there is a common thread in their work.
Q : In economic jargon it’s termed as externality.
R : Productive activity often has spillovers, meaning that it can impact an unrelated party.
S :Romer and Nordhaus both studied the impact of externalities and came up with profound insights and economic models.
The correct sequence should be

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 Public Affairs Centre (PAC) engages in action research focussing on Sustainable Development Goals in the context of India. PAC situated in-?