Match List-I with List-II. List-IList-II A. Economics of Idea I. Adam Smith B. Learning by doing II.…

Paul Romer’s endogenous growth theory centres on nonrival ideas (A-IV); Arrow developed learning by doing (B-III); Keynes used animal spirits for investment confidence (C-II); Smith’s invisible hand is D-I. Thus A-IV,B-III,C-II,D-I. The first swaps both the idea/learning and spirits/hand links; third reverses Romer and Arrow; fourth wrongly puts Smith with ideas and Arrow with the invisible hand. A-III, B-IV, C-I, D-II — Not selected for the specific reasons given above. A-IV, B-III, C-II, D-I — Selected; the independent derivation above supports this complete choice. A-III, B-IV, C-II, D-I — Not selected for the specific reasons given above. A-I, B-IV, C-II, D-III — Not selected for the specific reasons given above.