单选题 Why do the Harvard researchers use scientific technology in the experiments?

A、 Because they don't believe the surveys done by the marketers can lead to the truth.
B、 Because they are asked by the marketers to find a direct way to read the consumers' thoughts.
C、 Because they want to find out how the ads influence people's brain activity and emotional responses etc.
D、 Because they expect that their experiments can basically alter the marketing strategies of products.

【正确答案】 C

【答案解析】容易排除A和B两项；而D项与原文描述“The goal is not to manipulate peoples' preferences，”says Kosslyn，“just to speak to their actual desires．”不符。