An association formed by a group of individuals solely for the marketing of their product is a

An association formed by a group of individuals solely for the marketing of their product is called a "producer cooperative society". In such a cooperative society, the individual producers (such as farmers or artisans) come together to collectively market their products, thereby increasing their bargaining power and improving their access to markets. The producers pool their resources and share the profits, thus enabling them to earn a better price for their products. This helps in eliminating intermediaries, reducing marketing costs, and ensuring a fair price for the producers.