Solution:The given statement is true.
Concept- Automobiles and factories are more prevalent in larger cities like Delhi and Mumbai than in rural areas and smaller cities.
The lead is persistent in the environment and can be added to the soils and sediments by deposition from the sources of lead air pollution. Some other sources of lead to the ecosystems include direct discharge of waste streams to the water bodies and mining.
The primary contaminant released by autos is lead. It is a metal that occurs naturally and is a very dangerous gas. Damage to the kidneys, the brain, and anemia are all consequences.
Hence, the correct answer is option 1.