Answer:
35%.
Step-by-step explanation:
Placebo effect: In psychology, the placebo effect is defined as a particular phenomenon whereby a few people tend to experience a benefit or gain after the application of sham treatment or an inactive substance. The substance involved in the placebo causes no medical effects, for example, saline water, sugar pills, etc.
The placebo effect is based on the positive thinking pattern of an individual who believes in the treatment procedure is going to work.
The given statement's answer would be 35%.