______living things emit carbon dioxide when they breathe, carbon dioxide is widely considered to be a pollutant when associated with cars, planes, power plants, and other human activities.
A) Due to B) Nevertheless C) As though D) Though E) In case
Why the key is D, why not A?
Top answer
'Though' introduces contrast and that's the intended meaning in your sentence
— Ivanhr
'Though' introduces contrast and that's the intended meaning in your sentence
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'To' in 'due to' is a preposition, so grammatically it must be followed by a noun, not a verb: Due to living things emitting... However, the phrase does not fit well here in any case.