【正确答案】 C

【答案解析】[听力原文]
   W: Welcome to the daily business podcast. Did you know that even though nearly 100 percent of Americans have Internet access and own a cell phone, most retailers still spend an estimated 70 percent of their marketing budget on printed ad circulars? Yes, that's right. Sixty percent of shoppers from a recent survey say they prefer to look at printed paper material either mailed to the home or in newspapers, while only about 45 percent of people are looking at sales and product information from social media sites, store sites or from cell phones. But new research has shown that, while shoppers may prefer paper, digital advertising has great potential in combination with paper. Research showed that printed material gets shoppers in the store, and digital tactics can be used to reinforce and reward loyal shoppers. Printed campaigns help shoppers find deals about their favorite products and locate widespread sales, and high-tech touch points—such as tablets, social sites and in-store kiosks—are more likely to be viewed compared to in-store printed materials, kiosks or TV.
选项A错误，播报的主要目的不是教商家获利。选项B错误，研究表明纸质广告可以培养忠诚消费者，但这只是例子。选项C正确。选项D错误，社交媒体只是作为例子提到过。