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?
A) Some breath freshening products are advertised to eliminate up to 30% of the bacteria from
b) Tongue scrapers have already been on the market for a number of years.
c) Many dentists recommend regular flossing, and not the use of the tongue scraper, to combat
d) A recent survey shows that 94% of those who regularly purchase breath freshening products
are aware of the effectiveness of the tongue scraper.
e) Some people buy breath freshening products for reasons other than to fight bad breath.
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