GMAT Sentence Correction
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Source: PREP
Level: 3
The survival of coral colonies, which are composed of innumerable tiny polyps living in a symbiotic relationship with brilliantly colored algae, are being threatened, experts say, not only by pollutants like agricultural runoff, oil slicks, and trash, but also by dropped anchors, probing divers, and global warming.
- A are being threatened, experts say, not only by pollutants like
- B are being threatened, experts say, by not only pollutants such as
- C is not only being threatened, experts say, by pollutants such as
- D is not only being threatened, experts say, by pollutants like
- E is being threatened, experts say, not only by pollutants such as