I really wish you provided the research study. I would be happy to answer. It should be attached to wherever you found this question. Hope this helps :)
Answer:
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.
Using a single formatting B. Style helps to make reading researched information easier; it lets the reader know what to expect.