Vitamin C can be found in which of the following sources?

A. Determining which medication needs a prescription for the patient to obtain. The DEA does not determine which medications require prescriptions; this is typically under the jurisdiction of the Food and Drug Administration (FDA).

B. Ensuring the patient taking a medication has an option for generic medications. This role is more aligned with the FDA, which oversees the approval of generic medications. The DEA does not handle generic medication options.

C. Providing specific requirements for the manufacture of generic medications. This is also a role of the FDA, not the DEA. The DEA focuses on controlled substances, not the specifics of generic drug manufacturing.

D. Indicating which medications are controlled substances and enforcing the laws. This accurately describes the role of the DEA. The DEA classifies controlled substances into schedules and enforces the laws related to the handling, prescribing, and dispensing of these drugs.

A. Endangering the elderly: Teratogenicity does not refer to endangering the elderly. It is related to effects on the fetus.

B. Causing birth defects in the unborn fetus: Teratogenic substances are those that can cause birth defects when a pregnant woman is exposed to them.

C. Cancer-causing: Substances that cause cancer are called carcinogens, not teratogens.

D. Endangering the health of the mother: While some teratogens can also affect the mother, the term specifically refers to causing birth defects in the fetus.