The correct option is B Taj Mahal
Taj Mahal is one of the wonders of the world. But, due to an increase in pollution in the area around Taj Mahal, it is undergoing colour change as a result of acid rain.
Certain gases when mixed with the rain drops form acidic pollutants. These acidic pollutants fall down in the form of acid rain.
Acid rain causes damage to the buildings, monuments, plants, animals, water bodies and soil.