Question

What is the most effective type of research question?

A. A question with easily identifiable answers
B. A question that requires a subjective opinion
C. A question that causes a larger debate or conversation
D. A question that can be answered completely

Answer 1

I think it's C

Since the our purpose on research is to understand about what's going on and more concerned with process rather than outcome. That's means the question can be answered with the answer that can be asked again using other question (make a long conversation).