Answer:
I would say B) Safety
Explanation:
Maslow's Hierarchy of Needs? Then it should be safety since you are being sheltered from harm, making you safe. Physical needs maily involve the basics, like food or water.
Why? -- Proof, why and how does the alternative and complementary medicine work in terms of current understanding of medicine/anatomy/science
advantages to skepticism, reduction of people getting conned into paying into a false medical treatment
disadvantage to skepticism, the particular alternative treatment may actually work however the exact mechanism is not yet known and may be dismissed as psuedo-science