Concept:Market orientation is a business approach that focuses on identifying and satisfying customer needs.Explanation:The system described involves finding out what customers want and then producing goods or services to meet those wants.This is customer-centred because production is based on customer patronage and demand.Sales promotion aims to increase short-term sales through special offers.Market promotion and product promotion focus on promoting existing products or the market, not on producing what customers need.Therefore, producing what the customer needs in order to win patronage defines market orientation.Answer:D. market orientation