In the channel of distribution, which of the following sets is entirely made up of middlemen?

The set that is entirely made up of middlemen in the channel of distribution is "wholesalers, retailers and agents". Middlemen are individuals or organizations that act as intermediaries between the manufacturer or producer of a product and the end consumer. They help to bridge the gap between the manufacturer and the consumer by performing functions such as buying, selling, storing, and transporting goods. In the given options, "wholesalers, retailers, and agents" are all middlemen because they do not produce or manufacture the product themselves, nor are they the end consumers. Wholesalers buy products in bulk from the manufacturers or producers and sell them in smaller quantities to retailers. Retailers, in turn, sell the products to the end consumers. Agents, on the other hand, act as intermediaries between the manufacturer and the wholesaler or retailer, and facilitate the sale of products by negotiating with both parties. Therefore, the correct answer is "wholesalers, retailers and agents".