Answer: Relationship marketing
Explanation:
The relationship marketing is one of the type of business strategy that helps in developing the various types of long term business opportunity by interacting with the customer and also fulfill the actual requirement of the customers.
The main objective of the relationship marketing is that it helps in developing the strong connection with the consumers and promoting the products and the services to the users.
According to the given question, the relationship marketing is the helps in establishing the long term opportunities in which both the seller and the buyers are focus on the value enhancement process.
Therefore, Relationship marketing is the correct answer.