Rebecca is applying to graduate school and has several items she must turn in with her application, including letters of recommendation, GRE scores, transcripts, and a personal statement.
Which of these is likely the BEST indicator of her potential for success in graduate school?

academic transcripts.

Explanation:

An academic transcript can be defined as an academic records of the courses taken by the student, the grades received in it, achievements by the student in previous school.

The indicator of Rebecca's success in graduation is revealed by her academic transcript, that is GRE scores. GRE (Graduate Record Examination) is an admission test just like SAT and ACT. GRE test is comparatively difficult from other entrance tests. Thus, the GRE transcript of Rebecca indicates her success in graduate school.

So, the correct answer is an academic transcript.