Benjamin Rush, who encouraged more humane treatment of the mentally ill in the United States, used the tranquilizer chair and bloodletting as his principal remedies.
Option b
Step-by-step explanation:
Dr. Benjamin Rush was elected to the chair of institutes where he was told to treat the poor. He was told they were the best patients. He designed two things for the treatment of the mentally ill. Through bloodletting process, few ml of blood will be removed from patient to remove blood.
One of which was the tranquilizing chair. The patient was made to sit there. This controlled the blow flow rate and heartbeat. It lessened the muscular activities and heartbeat rate. This slowly helped in helping the ill. It is an economical process for treatment.