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Question 1 of 5
Backease is a specially designed cushion that relaxes tense back muscles by massaging the user's back. A survey showed that 70 percent of the people who used a Backease cushion for recently developed back pain experienced either a significant reduction or complete elimination of their back pain after two weeks of daily use. Clearly, therefore, anybody who has recently developed back pain and does not promptly use a Backease cushion risks needless suffering.
The argument is most vulnerable to criticism on grounds that it