Respuesta :
The underlined section of the marked number of the passage is correct as is. There are no mistakes in it.
What are grammatical errors?
Grammatical errors are the errors in writing or speaking any language, when the rules of grammar are not applied or applied in a wrong way.
Errors are often happened when we do not know the rules or are not familiar with the language.
Thus, the correct option is b, ‘Correct as is.’
Learn more about grammatical errors
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