The correct option is D All of the above.
Environmental pollution on account of air pollution causes respiratory diseases in children. To minimize the impact of environmental pollution particularly air pollution, the Government has inter alia taken the following actions:
1. Introduction of cleaner/alternate fuel like CNG, LPG
2. Promotion of public transport network including Metro
3. Compulsory PUC (Pollution under control) certification of period driven vehicles which test for carbon monoxide and hydrocarbons