Besides air pollution, four other important types of pollution are soil, water, waste, and a.
dust
b.
wind
c.
cloud
d.
noise

"Noise pollution is the correct answer. It is one of the four important types of pollution beside air pollution.It is caused by various reasons including but not limited to 1) Sound made by vehicles, 2) Sound at public events by various reasons.It is very harmful, as, it not only can cause damage to the human eardrum but can cause various other disorders like sleep disorder, hypertension etc."

True! is the answer hope this

Awould be the most dangerous