Answer: (C) Relationship marketing
Step-by-step explanation:
The relationship management is one of the business strategy where the organization basically maintaining the partnership with the clients and the customers.
The main aim of the relationship management is that it efficiently deals with the relationship between the business and the customers.
By using the relationship marketing strategy, it manage all the consumer data which is known as CRM (Customer relationship management) and also analysis the business.
Therefore, Option (C) is correct.