When Mohammed Kabir was employed as a Laboratory Technologist, almost everyone in the university started calling him "doctor." This was because __________.
A. he had a PhD B. he was a medical doctor C. he had a nickname since secondary school D. he was appointed as a doctor by the university authorities
Correct Answer: C
Explanation
The passage states that Kabir had a nickname of "doctor" since his secondary school days, and almost everyone in the university started calling him that when he was employed as a Laboratory Technologist.