According to the 1970 Controlled Substance Act, which group of drugs is strictly controlled due to their potential for abuse?

The classification of drugs under the 1970 Controlled Substance Act focuses on the potential for abuse and dependency. Controlled substances are specifically categorized into schedules that reflect both their medical use and the risk associated with their misuse.

The correct answer is centered on the definition of controlled substances, which includes drugs that have a recognized potential for abuse, leading to strict regulation and control by federal and state laws. These drugs are classified into five schedules (I through V) based on factors such as their potential for addiction, their accepted medical use, and whether they can be prescribed by a healthcare professional.

Legend drugs and pharmaceutical drugs encompass a broader category that does not necessarily indicate a high potential for abuse. Exempt narcotics, on the other hand, refer to particular medications that may have some level of control but are often less tightly regulated compared to the comprehensive guidelines governing controlled substances.

Thus, the significant focus on the abuse potential and legal ramifications makes controlled substances the accurate classification in the context of the question.