Read the paragraph.[1] Our house was once a stop on the Underground Railroad. [2] It was common for an enslaved person to stop there on their way to the North. [3] The Underground Railroad were a network of hiding places. [4] The cellar beneath our house has a secret door that was installed to trick slave catchers. Which sentence has a pronoun-antecedent agreement error?

Sentence 2.

Explanation:

Pronoun-antecedent agreement error is characterized as the error when there is an incongruity or disagreement between the pronoun and its antecedent. This error creates a kind of confusion while deriving the meaning of the sentence.

As per the question, sentence 2 contains a pronoun-antecedent agreement error because the plural antecedent 'their' does not agree with the singular pronoun 'an enslaved person' which creates a perplexity in the meaning of the sentence. Thus, the sentence could be modified to rectify this error either by altering the pronoun as per the antecedent or vice versa as follows;

'It was common for an enslaved person to stop there on his/her way to the North.'

or

'It was common for the enslaved persons/people to stop there on their way to the North.'

about the letter or who wrote the letter