Final answer:
The relationship between ReaderLink and Big Box stores is a vertical channel relationship, where ReaderLink acts as a wholesaler and the Big Box stores as retailers, aiming to increase efficiency in distribution.
Step-by-step explanation:
The channel relationship between ReaderLink and Big Box stores is a vertical channel relationship. In a vertical channel system, members of the channel such as manufacturers, wholesalers, and retailers work together in a unified group to meet consumer needs. ReaderLink, which is a distributor of books, typically falls in the category of a wholesaler, and the Big Box stores are retailers where consumers make their purchases. This type of arrangement usually allows for greater control over the distribution process and tends to be more efficient. A vertical channel aims to increase the efficiency and power of the channel by including all levels of the distribution channel, from production to sales.