Analyse the following scenarios and recommend what type of business structure should be adopted and why:

Alan would like to form a company, by advertising the offer of shares.
Bob would like to form a company with his two brothers to manufacture widgets.
Chris would like to form a company to manufacture toys. However, he does not want his employees, friends or family to know how well the company is doing.
David is a founder member of a local charity. The charity would like to set up a shop which can be used to sell locally made goods. Any profits made by the shop will be ploughed back into the charity. The bank is happy to lend $100 000 to get the shop started, but has asked for some security.

(Analyse legal concepts of business organisational structures, and underlying regulation including the application of these to sole traders; partnerships; corporations; trusts; agencies; joint ventures; incorporated associations).