A scientist has established that the greater the incidence of chronic back pain a study participant reported, the less likely he or she was to practice yoga. Based on this, the scientist found that the practice of yoga helps to prevent chronic back pain.


Question
The scientist's finding is most weakened by which of the following statements, if true?
Choices
A
If they develop chronic back pain, most yoga practitioners are forced to quit because of their physical limitations.
B
Yoga practitioners with occasional back pain find that a warm bath loosens their muscles enough to allow for continued yoga practice.


C
Some hockey players report higher incidences of chronic back pain than some yoga practitioners do.

D
Other physical conditions that make yoga difficult include torn ligaments and sprained joints.
E
Yoga helps some people to feel more calm and centered.