Question

Most major air pollutants cannot be seen, although

Answer 1

Most major air pollutants cannot be seen, although large amounts of them, concentrated in cities, are visible as smog. (Option E).

What is sentence correction?

Sentence correction or sentence improvement is a type of grammatical practice where a sentence is given with a word or a phrase that requires grammatical changes or improvement.

Now,

• Since the given sentence is grammatically error-free and has a sensible sentence structure, it does not need any sentence correction.

Hence, Option E is the most appropriate, i.e., Most major air pollutants cannot be seen, although large amounts of them, concentrated in cities, are visible as smog. (Option E).

To learn more about sentence correction, refer to the link: brainly.com/question/14632568

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