The primary aim of a co-operative is to serve the members. A co-operative is an autonomous association of persons united voluntarily to meet their common economic, social, and cultural needs and aspirations through a jointly-owned and democratically-controlled enterprise.
Option A is incorrect because the primary aim of a co-operative is not to earn more profits. Co-operatives are not-for-profit organizations, and any surpluses they generate are returned to the members in the form of dividends or patronage refunds.
Option B is correct because the primary aim of a co-operative is to serve the members. Co-operatives are owned and controlled by their members, and they exist to meet the needs of those members.
Option C is incorrect because the primary aim of a co-operative is not to raise production. Co-operatives may focus on increasing production, but this is not their primary aim.
Option D is incorrect because the primary aim of a co-operative is not to raise more money. Co-operatives may raise money, but this is not their primary aim.