OFFICIAL EXPLANATION
John likes Paul although he thinks he is better than everyone else.A. likes Paul although he thinks he is better than everyone else
This answer choice is ambiguous: it is syntactically unclear whether he refers to John or to Paul.
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 itB. like Paul although he thinks he is better than everyone else
This answer choice repeats the original ambiguity mistake: it is syntactically unclear whether he refers to John or to Paul.
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, this answer choice creates a Subject verb Agreement mistake by replacing the singular verb likes with the plural form like.C. likes Paul although Paul think he is better than everyone else
While this answer choice corrects the original ambiguity mistake, it creates a Subject Verb Agreement mistake by replacing the singular verb thinks with the plural form think.D. like Paul although Paul thinks he is better than everyone else
While this answer choice corrects the original ambiguity mistake, it creates a Subject Verb Agreement mistake by replacing the singular verb likes with the plural form like.E. likes Paul although Paul thinks he is better than everyone else
CORRECT.