Answer: (A) Sulphur dioxide reacts with molecules of water in the environment to generate sulphuric acid, which is formed as acid rain. This rainfall might cause the structure to discolour, break, and decompose. The proximity of the Vrindavan Factory to the Taj Mahal is a significant contributor to the sulphur dioxide present in the rainfall. Chlorine isn’t a part of the acid rain problem.
As a result, the right response is ‘sulphur dioxide.’