I have a problem in economics on Wise and efficient use of grocery in Consumer Surplus. Please help me in the following question. The consumer surplus is most probable to be raised by: (i) Wise and proficient use of grocery store coupons. (ii) Rises in the production costs. (iii) Legal limits on exorbitant gains. (iv) Growth of average number of children per family. (v) Regulation threatening the sale of inferior goods.
Choose the rightmost option from above.