Answer:
A. Done some research
Explanation:
You need to have an idea of what you are working with. So, to make a good hypothesis, you need to have an idea on what the experiment is. The hypothesis comes before you design a procedure or even start working on the experiment.
And BTW, you can't logically do option D. Science doesn't work that way. The Scientific Method is used to collect observations and evidence and piece them together to come to a conclusion.
Hope that helped. :)