Concept: A co-operative society has specific basic features, and the exception among the options is the one that is not a defining characteristic.
Explanation: Co-operative societies are managed democratically, where each member has one vote regardless of capital contributed.
They follow the principle of "one man, one vote", which ensures equal participation.
Extra capital can be raised through loans and members' contributions.
However, amateur management is not a basic characteristic of a co-operative society.
It is actually a common weakness or limitation, because members who manage the society often lack business experience and expertise.
Therefore, the option that is "not" a basic characteristic is amateur management.
Answer: C. Amateur Management