题目选项分析

Market Analyst: Recent research confirms that the main cause of bad breath is bacteria build-up on the tongue. The research also concludes that tongue scrapers, when used properly, can eliminate up to 40% of the bacteria from the tongue. As the effectiveness of tongue scrapers becomes more widely known, the market for less effective breath freshening products, such as mints, gums, and sprays, will decline significantly. Which of the following provides the best evidence that the analyst's argument is flawed?

【选项】Some people buy breath freshening products for reasons other than to fight bad breath