Which of the following federal oversight groups in the United States is responsible for conducting scientific research on the medical practices and products that are not generally considered part of conventional medicine?

A. Illinois Department of Public Health (IDPH): The IDPH oversees public health programs and regulations within Illinois but does not conduct national research on complementary or alternative medical practices. B. National Center for Complementary and Integrative Health (NCCIH): The NCCIH, part of the National Institutes of Health (NIH), is responsible for conducting and supporting scientific research on complementary, alternative, and integrative health practices to determine their safety and efficacy. C. Drug Enforcement Administration (DEA): The DEA regulates controlled substances to prevent abuse and diversion but does not conduct research on medical practices or alternative therapies. D. Food and Drug Administration (FDA): The FDA regulates the safety, efficacy, and marketing of drugs, biologics, and medical devices but does not focus specifically on research into non-conventional or complementary medical practices.