Concept:A co-operative society has specific features that distinguish it from other business organisations.
Explanation:The basic characteristics include voluntary association, open membership, democratic management, and one man one vote.
It also operates with a service motive, a separate legal entity, state control, and distribution of surplus among members.
Amateur management is not a recognised basic feature of a co-operative society.
Co-operative societies are usually managed by elected members or professional managers, not by amateurs.
Answer:C. Amateur Management