​The commonality among all the systems, practices, and products that are considered alternative is

A) ​that they are ineffective except for the placebo response.
B) ​their derivation from Chinese medicine.
C) ​that they are not accepted within conventional medicine.
D) ​their higher degree of effectiveness compared to conventional techniques.

Placebo Response

An effect experienced by a patient after a placebo treatment, which is a substance with no therapeutic effect, suggestive of an actual medical benefit.

Chinese Medicine

A holistic system of medical practice originating from China that includes herbal medicine, acupuncture, massage (Tui Na), exercise (qigong), and dietary therapy.

Conventional Medicine

A system of medicine based on the diagnosis and treatment of disease using drugs, surgery, and other traditional methods.