What concrete evidence does the author provide to prove that acupuncture works?
Responses
A Studies documenting the effects of acupunctureStudies documenting the effects of acupuncture
B The history of acupuncture in the United StatesThe history of acupuncture in the United States
C Descriptions of how people respond to acupunctureDescriptions of how people respond to acupuncture
D An explanation of traditional Chinese medicine