Bussiness Administration vs Public Administration Vs Governance & Public Policy
 

Hi, My question is how to select logically among the above-mentioned subjects of the same category. I do not have a prior knowledge base of any of these subjects. Furthermore, I have limited time (approx. 10 days) to prepare a subject from this group. Can one prepare business administration in this limited time from scratch, without any background in it?
Thanks in anticipation!