Which of the following is a complementary therapy used in pain management?

Acupuncture is a complementary therapy used in pain management due to its holistic approach, which differs from conventional medical treatments. It involves the insertion of thin needles into specific points on the body, which is believed to help balance the body's energy, reduce pain, and promote healing. This practice is often used alongside traditional medical treatment to enhance pain relief and improve overall well-being.

Cognitive-behavioral therapy also plays a role in managing pain by addressing the psychological aspects of pain, but it is typically categorized as a psychological or behavioral intervention rather than a complementary therapy like acupuncture. Surgery and radiation therapy are more invasive medical interventions that target specific health issues rather than complementing other forms of treatment. Therefore, acupuncture stands out as a widely accepted complementary therapy that integrates well with other pain management strategies.