Answer:
Franklin proves Dr. Mesmer’s methods only work if patients expect something will happen, Dr. Mesmer becomes famous by convincing patients that his force has made them feel better.
Step-by-step explanation:
In mesmerized, Franklin conducts several experiments by blindfolding the patients and using the force on himself. Since he didn't believe there was a magical force, he didn't feel a thing, and when the other patients didn't know Charles, the person who apparently helped franklin realize Mesmer was a fraud, was using this so called "force," they didn't feel a thing, either. Dr. Mesmer made the patients believe that there was a force and it made them feel better because they expected to be better.