What idea does the talk want to convey?A.The supermarket makes some of the decisions for p

What idea does the talk want to convey？

A．The supermarket makes some of the decisions for people.

B．People make a list before they go to a supermarket.

C．People like to go to a supermarket.

D．Marketing specialists study methods of selling more products.

请帮忙给出正确答案和分析，谢谢！