Concept:Credit unions and thrift societies are cooperative financial organisations owned and controlled by their members.
Explanation:Members save money by contributing according to their financial capacity.
The amount each member contributes is not fixed for all but depends on the member’s ability to pay.
Option A correctly states this major characteristic.
Membership is voluntary, not compulsory, so C is wrong.
The process of formation is not rigid, so B is wrong.
There is no strict rule requiring exactly ten people in the same line of business, so D is wrong.
Answer:A. the contribution of every member depends on the member's ability