Air pollution in Tehran _________________
A) comes primarily from burning fuel wood
B) is caused mainly by very high levels of CFCs and acid deposition
C) is caused primarily by vehicles unequipped with pollution control technology
D) is far less serious than in Los Angeles
E) has been reduced by 90% thanks to strict air pollution laws

Question

Quizplus · Accepted Answer

The passage states that air pollution in Tehran is caused primarily by vehicles unequipped with pollution control technology.

Air Pollution in Tehran _________________