Social surplus is maximized when all buyers with the reservations values than the market price are actually making purchases and all sellers with the reservation values than the market price are selling the products.

highest-value; lowest-cost

Explanation:

Social surplus  can be define as the rate, amount of value or utility(which are welfare)  a society has gotten from goods and services consumption. It is not not like money or resource.

it is also referred  as economic surplus. it is  the summation of the sum of consumer surplus and producer surplus. The economic surplus is referred to as welfare package in full

answer; ///(d); determining who competes most closely   with whom evaluating whether industry driving forces and competitive pressure favor some strategic groups and hurt others, and ascertaining whether the profit potential of different strategic groups varies due to the strengths and weaknesses in each groups respective market positions;

answer; institution based;