Answer: Exclusive distribution
Step-by-step explanation:
Exclusive distribution is defined as the agreement in which a parties involved are manufacturer and distributor.It states that the particular distributor cannot sell their service or item to any other party .It binds the agreement that product can be sold to the exclusive distributor.
According to the situation mentioned in the question, designers are asked for exclusive distribution by the retailer.Retailer does not wants that design of jewelry to be sold through any other source or retailer for effective sale.Thus agreement upon this matter is proposed by the retailer.