Assertion: Of all the sources of noise pollution, the biggest nuisance is the noise produced by traffic,
Reasoning: Its intensity and nature depend upon factors, such as the type of aircraft, vehicle, train and the condition of road, as well as, that of vehicle (in case of automobiles).
Answer & explanation
Correct answer: option 1
Of all these sources of noise pollution, the biggest nuisance is the noise produced by traffic, because its intensity and nature depend upon factors, such as the type of aircraft, vehicle, train and the condition of road, as well as, that of vehicle (in case of automobiles).