Although Motor Vehicles Are Associated with Pollution and Other Environmental

Although motor vehicles are associated with pollution and other environmental concerns, one advantage of them is that ____.

A) they often help to reduce traffic congestion in large cities
B) they reduce carbon dioxide emissions and ozone pollution from industrial sources
C) they produce fewer greenhouse gases than other forms of transport
D) they are safer than public transport such as buses and trains.
E) they are responsible for much of the world's economy in terms of production and related services