How do we move from analysis to design?

What will be an ideal response?

Analysis and design are not phases divided by clearly-defined lines. They are activities that overlap; the transition between the two occurs only incrementally. Design objects — objects that serve the product — are discovered by starting from analysis artifacts.
Essentially, design uses the same modeling tools as analysis, but turns its focus from the problem space to the solution space. There are two exceptions: use cases that are used by design but not created for it, and component diagrams that are primarily for use by design.