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California4jx
- Master | Next Rank: 500 Posts
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IMO: E
is being threatened, experts say, not only by pollutants such as
- survival is singular and hence "is"
- note only by.....but also by idiom and parallelism maintained by "by"
- oil slicks, trash, are examples of pollutants and hence such as
C is wrong since not only being threatened ... but also by dropped... here parallelism is not maintained between "being threatened' and "dropped..."












