____reasons for my decision to become a university professor, my father's advice was
____most important one
Which of the following choice is correct?
- A: the; a
- B: /; a
- C: /; the
- D: the; the
The slash ("/") here means "don't fill anything".
The author says the correct answer is D, but I think C is also correct. Why is "the" required before "reasons"? What is the explanation from a grammatical point of view?
Actually I am an EFL teacher and my native language is Chinese. I am quite confused about the question. I've asked the question somewhere else, but they failed to explain why "of all the reasons" is grammatically correct while "of all reasons" is not. Or do you also think they both are correct?