The 'Placebo Effect' Is Best Defined As

The 'placebo effect' is best defined as:

A) the cultural interpretation of a disease and its repercussions.
B) a measurable improvement to one's health that cannot be attributed to biomedical procedures or pharmaceuticals.
C) the psychological side effects of medicine.
D) when the belief that one has been cursed leads to one's death.
E) unintended physiological side effects that accompany treatment medication.