Final answer:
Chiropractic is the method of alternative treatment based on the theory of subluxation causing diseases. Chiropractors use manual techniques, such as spinal manipulation, to adjust patients' spines and treat musculoskeletal system problems.
Step-by-step explanation:
Chiropractic is the method of alternative treatment that is based on the theory that many diseases are caused by subluxation. Chiropractors use a drug-free, hands-on approach to diagnose and treat patients with musculoskeletal system problems. They primarily use manual techniques, such as spinal manipulation, to adjust the patient's spine or other joints.