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Sentence Correction: Pronoun Questions - Ambiguity

An Anti-Slavery Society was formed in Britain in 1823, and many believe that its abolition of slavery ten years later was a direct result of the Society's efforts.

This answer choice is stylistically flawed. The pronoun its is ambiguous as it agrees with both Society and Britain.

What helps us identify this question as a Pronoun question as well as identify the ambiguity mistake is the following Stop Sign

Every pronoun in the underlined part of the sentence or after it

This answer choice repeats the original mistake. The pronoun its is ambiguous as it agrees with both Society and Britain.

What helps us identify this question as a Pronoun question as well as identify the ambiguity mistake is the following Stop Sign

Every pronoun in the underlined part of the sentence or after it

Also, this answer choice is grammatically incorrect. Replacing the singular verb was with the plural were creates a Subject Verb Agreement mistake: the singular subject abolition does not agree with the plural verb were.

While this answer choice corrects the original ambiguity mistake, it is grammatically incorrect. Replacing the singular verb was with the plural were creates a Subject Verb Agreement mistake: the singular subject abolition does not agree with the plural verb were.

This answer choice repeats the original mistake. The pronoun its is ambiguous as it agrees with both Society and Britain.

What helps us identify this question as a Pronoun question as well as identify the ambiguity mistake is the following Stop Sign

Every pronoun in the underlined part of the sentence or after it

In addition, replacing the addition word and with the opposition word but creates an illogical sentence as well as changes the meaning of the original sentence.

Well done!

This answer choice corrects the original ambiguity mistake by replacing the ambiguous pronoun its with the word the.    

and many believe that its abolition of slavery ten years later was
and many believe that its abolition of slavery ten years later were
and many believe that the abolition of slavery ten years later were
but many believe that its abolition of slavery ten years later was
and many believe that the abolition of slavery ten years later was