Organizations that are owned by groups of individuals who aren't stockholders are called?

this is a vrey badly formulated question, by the end of the day any organisation will ulimatelly have shareholders who are individulals. taking an exclusion based approach, i would choose b) as partners , even if they do not really own the organisation, can to some extent behave as owners. but, again, this is a very tricky question. if you get a documented answer, please share I am interested in finding out the reasoning behing the answer