The concept of 'Consumer Surplus', which measures the difference between the total amount a consumer is willing to pay for a good and the total amount they actually pay, was pioneered by which economist?

Answer: Alfred Marshall

Alfred Marshall introduced the concept of consumer surplus in his seminal work 'Principles of Economics' (1890). It is a crucial tool in welfare economics used to quantify the net benefit or utility consumers derive from market transactions, and it helps policymakers evaluate the welfare impacts of taxes, subsidies, and price controls.