Choose the BEST correction for the run-on or comma splice in this sentence:
A student may have studied and mastered the material, test anxiety may cause a student to perform poorly.
A. the material, however, test anxiety
B.Even though a student . . . material, test anxiety
C.the test anxiety material; this
D.Even though a student . . . material; test anxiety (I have already tried answers d and a)
I also will mark brainliest!