Final answer:
In chiropractic care, Gonstead, Activator, and Flexion-Distraction are among the four most widely practiced techniques, whereas Advanced Orthogonal is less common and not one of the top four.
Step-by-step explanation:
The student's question refers to techniques within the field of chiropractic care, which is a form of alternative medicine that focuses mainly on diagnosis and treatment of mechanical disorders of the musculoskeletal system, especially the spine.
Among the techniques mentioned, Gonstead, Activator, and Flexion-Distraction are indeed widely practiced by chiropractors.
Advanced Orthogonal, however, is a less common practice and is not typically listed among the four most recognized techniques in the field of chiropractic care.
The Gonstead technique involves detailed analysis and specific adjustments, the Activator method uses a hand-held instrument to deliver precise adjustments, and Flexion-Distraction involves a special table to gently stretch the spine.