GMAT Sentence Correction
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Source: OG
Level: 3
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 ozone, formed in the atmosphere from