Many of the runners ____ incredibly fast.
The subject is "many" and many is plural.
Has would be wrong because you need a linking verb (the predicate is an adjective)
"Is" would be wrong because the subject is plural and "is" corresponds to a singular subject.
"Was" is incorrect because "was" corresponds to a singular noun.
Therefore "are" would be correct because it is a linking verb that corresponds to a plural noun.
Where is the passage I can’t see it
The correct answer is ethical
He was highly unethical and plotted and schemed the downfall of the man who loved him and plotted against his country.
