The strategy of improving relationships with existing customers, which is based on the assumption that most customers prefer to maintain an ongoing relationship with one organization rather than switch continually among providers in their search for value, is defined as group of answer choices

Relationship marketing

Explanation:

Relationship marketing is a known as a tool of customer relationship management which tends to focus on the customers loyalty and their long-term engagement instead of shorter-term goals such as individual sales and customer acquisition.  The goal of this marketing is to develop strong, emotional, customer relation to the brand that might further lead to success of the business and organization.

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