The correct options are
A Use of cleaner fuels like CNG and LPG.
B Use of unleaded petrol in vehicles.
C Shifting polluting industries outside the city.
Pollutants such as SO2, NO2, smoke, dust, soot etc. are produced by motor vehicles and industries situated in and around Agra. Cleaner fuels in vehicles produce less harmful substances, unleaded petrol does not have lead contents and does not emit harmful compounds, thus causes less pollution. Therefore, supreme court of India has suggested these steps to save Taj Mahal.
Use of fertilizers and pesticides in agriculture pollutes water, air and soil.