What is the purpose of premedicating a patient before anesthesia?

To prepare the patient to receive anesthetic drugs.
To sedate the patient and prevent injuries to the patient or operator.
To provide analgesia.
To reduce the total dose of general anesthetics.
To decrease respiratory secretions, gastrointestinal motility, and prevent vagal bradycardia.
To promote a smooth and calm awakening.
To correct any pre-existing pathologies.