Which of the following is an example of an alternative therapy?

Acupuncture is an example of an alternative therapy because it encompasses practices that fall outside the conventional medical paradigms typically utilized in Western medicine. Originating from Traditional Chinese Medicine, acupuncture involves the insertion of fine needles into specific points on the body, aiming to balance the flow of energy (Qi) and promote healing. This therapy is utilized for various ailments, including pain management, stress reduction, and improving overall well-being.

In contrast, the other options are recognized as more conventional medical treatments. Physical therapy is a rehabilitative approach focused on improving physical function and mobility and is widely integrated into standard medical practice. Radiation therapy is a well-established treatment method for cancer, utilizing high-energy radiation to kill or inhibit the growth of cancerous cells. Vaccination is a preventative public health intervention that helps protect against infectious diseases and is based on scientific principles of immunology. Thus, acupuncture stands out as a distinct form of alternative therapy within the context of these choices.