What Act is responsible for defining controlled substances?

The Texas Controlled Substances Act is the correct choice because this legislation specifically governs the regulation of controlled substances within the state of Texas. It establishes a framework for classifying drugs according to their potential for abuse and medical use, along with the legal requirements for their distribution, prescribing, and possession. This Act outlines the scheduling of substances, the penalties for illegal activities involving these substances, and the regulatory authority overseeing compliance.

The Texas Health and Safety Act primarily deals with a broader range of health and safety issues, and while it may touch upon controlled substances, it does not specifically define them. The Controlled Substances Act at the federal level does provide a definition of controlled substances, but it does not pertain specifically to Texas law. The Texas Prescription Drug Act addresses specific prescription medication issues but does not encompass the full range of controlled substances and their regulation. Thus, the Texas Controlled Substances Act is uniquely positioned as the authoritative source for definitions related specifically to controlled substances in Texas.