The correct option is C All of the above
The overcrowded towns lacked sanitary amenities. Air, water and noise pollution affected the health of the people. People's respiratory system was affected because of air pollution. Due to the outcome of poisonous gases from some of the factories, many people died. Unhygienic and dirty water from industries polluted water and people suffered from diarrhoea, gastro and jaundice. City vehicles and sound of machinery caused sound pollution and men became deaf permanently.