For ideal form ....
1.ease of formation
2.ease of financing
3.flexibility of operations liability from govt 6.regulations and control
7.maintenance of business secret burden
9.continuity and stability
10.scope for control
Criteria for ....
1.nature of business
2.size of business of control desired
4.amount of capital required
5.extent of risk involved
6.duration of business
7.area of operation
8.govt regulations
( explain all the points in short)