Answer:
B
Explanation:
i took a guess from the person above and they were right on B.
Coal contains hydrocarbons, which on burning release poisonous gases. The fuel used for transport of coal will also contribute to air pollution.
Any harmful pollutant present in air can make it polluted. It can also be defined as contamination of indoor and outdoor environment which cause change in natural characteristics of environment.
The three main causes of air pollution are:
Thus, option B is correct.
For more information about air pollution, visit:
https://brainly.com/question/851228