Which of the following is considered a complementary and alternative medicine treatment?

A. Drug therapy with prescription medications such as simvastatin or metformin: Prescription medications are part of conventional medicine and are not classified as complementary or alternative treatments. B. Receiving a vaccine for influenza: Vaccination is a standard, evidence-based preventive intervention in conventional medicine and does not fall under complementary or alternative approaches. C. Physical exercises such as Qi gong and breathing exercises: Practices like Qi gong, Tai Chi, yoga, and structured breathing exercises are examples of complementary and alternative medicine (CAM) because they are non-conventional interventions often used alongside or instead of standard medical care to support health and wellness. D. Taking an acetaminophen for a fever: Acetaminophen is a conventional pharmacologic therapy used in mainstream medicine for fever and pain management, not considered CAM.