A consumers' co-operative society is a type of business organisation formed by a group of individuals who pool their resources together to buy goods in bulk and distribute them among themselves at fair prices. The defining feature of any co-operative society is that it is owned and controlled by its members, who each have an equal vote regardless of the size of their financial contribution.
Members join by purchasing shares in the society, and the profits (called surplus or dividends) are distributed among them in proportion to their patronage, not their shareholding. The management committee is elected by the members to run the day-to-day operations, but the committee does not own the society - it acts on behalf of the membership. Debenture holders are creditors who lend money to organisations and earn interest; they have no ownership stake. The government plays no role in owning a co-operative society, although it may register and regulate co-operatives through legislation.
The correct answer is that a consumers' co-operative society is owned by the members of the society. This is the foundational principle of all co-operative organisations worldwide, enshrined in the Rochdale Principles that guide co-operative practice.