663. A channel of distribution is any series of firms (or individuals) who participate in the flow of products to final user or customer.

✅ The correct answer is option A.
A channel of distribution is any series of firms (or individuals) who participate in the flow of products to final user or customer. A distribution channel is a chain of businesses or intermediaries through which a good or service passes until it reaches the final buyer or the end consumer. Distribution channels can include wholesalers, retailers, distributors, and even the Internet.