Based on this selection, homeopathic remedies can best be described as

The correct answer is A unproven.

Homeopathic remedies are often described as unproven because there is a lack of scientific evidence supporting their efficacy. Many studies have shown that the effects of these remedies are not significantly better than placebo. Therefore, they are typically viewed with skepticism in the medical community. If you have more questions or need further clarification, feel free to ask!