Correcting Grammatical Parallelism in Sentences

Hard Sentence Correction Grammar And Usage

In recent years, researchers have detected a surprising correlation between air pollution and various health issues, suggesting not only potential risks but also requiring immediate action to mitigate these dangers.

Which of the following options corrects the error in the sentence?

suggesting not only potential risks but also needing immediate action to mitigate these dangers.

suggesting not only potential risks but also requiring immediate actions to mitigate these dangers.

suggesting not only potential risks but also requires immediate action to mitigate these dangers.

suggesting not only potential risks but also necessitating immediate action to mitigate these dangers.

Hint

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% Correct63%