What type of company would be best suited for the following organizations?

a.A charity raising funds for cancer research.

b.A major domestic soccer federation.

c.Three friends who wish to start a fashion business.

d.Lachlan who wants to start a skydiving business by himself.

e.A group of 75 people who have agreed to pool money and invest in the stock market.

f.A mining company that wants to invest in a speculative gold mining venture with its own funds and funds raised from the public.

g.A start-up telecommunications company that needs $1billion for its infrastructure and intends to raise the funds from the public.