AI-generated practice question — model-generated for extra practice, not a previous-year CBSE board question.
Option C: Double coincidence of wants
In a barter system, both parties must agree to sell and buy each other's commodities. What one person desires to sell must be exactly what the other wishes to buy.
The passage directly states: "In a barter system where goods are directly exchanged without the use of money, double coincidence of wants is an essential feature." There is no bank, currency, or written agreement involved in barter — these are features of a modern money economy. Examiners look for the exact term "double coincidence of wants."