Which Is an Example of a Temporal Comparison That Would

Which is an example of a temporal comparison that would enhance self-esteem?

A) Joan compares herself to her roommate, who has a much lower GPA than she does.
B) Xavier compares himself to his roommate, who has a much higher GPA than he does.
C) Anna compares her present GPA to her freshman year GPA, which was much lower.
D) Rod compares his present GPA to his freshman year GPA, which was much higher.