单项选择题
A. producing and selling goods B. the needs and wants of customers C. the selling of new products D. moving goods to the market
A. It will be more quiet. B. There will be less people. C. There will be no cars at all. D. Everybody will have to talk around the park.
A. an understanding of consumer needs B. the efficient movement of goods C. developing new wants for consumer goods D. making goods readily available to customers