This is the starting point of analysis identified in step 1 of your problem solving process.
A reasonable assumption about the answer to the problem question above.
How can we prove the hypothesis above? What tools and methods are most appropriate based on the context and available time/budget?
What data can we use to analyze the hypothesis thoroughly? This can include both primary and secondary sources.
Who is the responsible person for carrying out the solution? What are the sub-steps to be completed for successful project completion?