Question

prescription drugs become illegal when ______. a. you buy them without a prescription b. they are used with a prescription c. unused medicine is not resold d. they are used to treat an illness

Explanation:

Prescription drugs are regulated medications that require a valid doctor's prescription to legally obtain and use. Purchasing them without this prescription violates pharmaceutical laws, making the act (and the possession/use in this context) illegal. Options B, C, and D describe legal, appropriate uses or actions regarding prescription medications.

Answer:

A. you buy them without a prescription