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Choose the correct option to replace the quotation part of each sentence. Often visible as smog, 'ozone is formed in the atmosphere from' hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.

A. ozone is formed in the atmosphere from
B. ozone is formed in the atmosphere when
C. ozone is formed in the atmosphere, and when
D. ozone, formed in the atmosphere when
E. None of these
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সঠিক উত্তরঃ B. ozone is formed in the atmosphere when
Explanation: