एरो का असंभवता प्रमेय (Arrow's Impossibility Theorem) दर्शाता है कि उचित मानदंडों के एक विशिष्ट सेट के तहत, एक ऐसा सामाजिक कल्याण कार्य तैयार करना असंभव है जो सभी शर्तों को पूरा करता हो। इसका अर्थ है:

Which of the following correctly describes the Arrow Impossibility Theorem conditions? A. Unrestricted Domain (UD): The social welfare function must work for all possible individual preference orderings. B. Pareto Principle (PP): If all individuals prefer A to B, society must prefer A to B. C. Independence of Irrelevant Alternatives (IIA): Social ranking of A vs B depends only on individual rankings of A vs B, not on rankings involving a third alternative C. D. Non-Dictatorship (ND): There exists one individual whose preferences always determine society's preferences. E. Arrow proved that no social welfare function can simultaneously satisfy UD, PP, IIA, and ND when there are at least 3 alternatives and 2 individuals. Which statements correctly state Arrow's conditions (not the theorem result)?

Arrow's Impossibility Theorem demonstrates that: