Answer:
The correct answer is letter "C": entry of large discount superstores.
Step-by-step explanation:
A channel length is composed of the number of middlemen in the distribution channel of a product. The more intermediaries between buyers and sellers the larger the channel length. Under that scenario, if there are more discount superstores in a market such as Walmart or Costco manufacturers can directly offer their goods to them so consumers can find them available in their stores. The channel length would be small, then.