Question

Who wrote the famous book "Principles of Economics"?

• A. Adam Smith
• B. Marshall
• C. Robbins
• D. Mehta

Hint:

Remember authors by their signature works: Marshall—Principles of Economics; Smith—Wealth of Nations; Robbins—definition of economics and Essay on… Economic Science.

Answer 1

The Correct Option is B

Alfred Marshall authored Principles of Economics (first published in 1890), a landmark text that formalized many microeconomic ideas.
By contrast, Adam Smith wrote The Wealth of Nations (1776), and Lionel Robbins wrote An Essay on the Nature and Significance of Economic Science (1932).
Marshall's book introduced and popularized core concepts such as elasticity of demand, consumer surplus, and partial equilibrium analysis, shaping modern microeconomics.