Consider a solution saturated with Ag₂SO₄(s) at equilibrium Ag₂SO₄(s) ⇌ 2Ag⁺(aq) + SO₄^2-(aq) On addition of NaCl(s), the amount of Ag₂SO₄ in equilibrium will

This option is correct and can be explained as follows: When NaCl(s) is added to the system it dissociates as NaCl(s)  ⇌  Na⁺(aq)  +  Cl^-(aq)The Cl^- ions obtained from the dissociation of solid NaCl will combine with Ag⁺ ions to precipitate AgCl. Hence the equilibrium will be shifted in forward direction in accordance with Le-Chatelier's principle and more Ag⁺ and SO₄^2- ions will be formed resulting in consumption of Ag₂SO₄ and hence its concentration will decrease.