Answer:
A. Education
Step-by-step explanation:
OPTION (A) is absolutely correct, because Allison can only make hiring decision of the fifty applicants by their education.
As we know that the interviewer is not suppose to question any of the interviewee regarding their personal information like what is your color, where is your national origin, what is you age, what is your religion, what is your gender and marital status and also the interviewee's sexual orientation.