The best evaluation of the evidence used to support the author's viewpoint is:
**C** Chris Johnson offers specific details in support of Pro Walk orthopedic inserts and Dr. Ernestine Campbell offers a specific recommendation for the inserts.
In the text, Chris provides specific personal experiences regarding the inserts, noting improvements in his feet, posture, and even coordination. Additionally, Dr. Campbell discusses the importance of properly fitting orthotics, suggesting that although she believes in the product's potential benefits, it must be matched correctly to the user’s feet.