All of the following are parts of the second step (analyzing the solution) except a. gathering information about the problem b. generating a variety of solutions c. distinguishing fact from opinion d. evaluating the cause of the problem

A. gathering information about the problem

The second step is understanding the accommodated problem and finding proper resolutions to that certain perceived problem or rather identified obstacle that needs to be resolved. This is achieved by forming various accessible viewpoints and perspectives that could help reveal a proper result. 

Ican only answer your first question, a machine is like a human body because it's a little similar. they both almost work like the same.