The correct answer for this question is Designed experiment.
A person experiences the placebo effect when their physical or mental health seems to get better after receiving a placebo or "dummy" treatment. A treatment that seems to be real but is intended to have no therapeutic benefit is referred to as a placebo. The Latin word for placebo means "I will please."
One of the most popular hypotheses holds that a person's expectations are what causes the placebo effect. It's possible that the body's chemistry can produce results comparable to what a drug might have produced if a person anticipates a pill to do something.
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I think it may be B. Climax
True it is also the smallest passage in the human body
It maybe A of couurse I play the video games even though I can tell you video games sure are not the answer.
The exact mechanism of immune complex formation is unknown.
