Answer:
a. contact efficiency
Step-by-step explanation:
Contact efficiency is defined as the way by which businesses cut the number of transactions of stages that exist between a product and the final consumer.
Typically it results in a wide variety of options of goods and services to be available to the consumer in on place.
The consumer finds it easy to get what he is looking for and the supplier has a ready market for his goods.
In the given scenario Foot Locker effectively uses contact efficiency by making the consumer find several different brands of shies. At the same time, for companies that manufacture sneakers, selling through Foot Locker will make it easier to reach a lot of potential buyers.