Jay stops at the shopping mall to purchase a new pair of jeans from the Diesel store. He is the ultimate consumer in a pipeline from the producer through intermediaries, including the clothing store. This pipeline is actually a

marketing channel

Explanation:

Marketing channel means a chain which connected producer to consumer, it refer to number of people, activities required to transfer the product ownership from producers to consumer. Producers don't have direct access to consumer, so there is need of channel and people to access costumer.