Which of the following contains a vague pronoun reference?
A: Steven's brother Jim wondered whether he ran fast enough to qualify for the Boston Marathon.
B: Steven's brother Jim wondered whether Steven ran fast enough to qualify for the Boston Marathon.
The first answer choice contains a vague pronoun reference. The pronoun he could refer to Steven or Jim.
The second answer choice shows a possible correction for the vague pronoun reference. He has been replaced with Steven.
Steven's brother Jim wondered whether Steven ran fast enough to qualify for the Boston Marathon.