Final answer:
Manufacturers of convenience products such as chewing gum are most likely to use the retail channel to reach customers through thousands of retailers.
Step-by-step explanation:
The marketing channel that manufacturers of convenience products such as chewing gum are most likely to use is the retail channel. Retailers are the businesses that sell products directly to consumers. These manufacturers would distribute their products to thousands of retailers, such as grocery stores, convenience stores, and drugstores, who would then sell them to the end customers. Through the retail channel, manufacturers can reach a wide customer base and make their products easily accessible to consumers.