Which of the following best describes a "counterfeit blank"?

The term "counterfeit blank" specifically refers to a prescription form that has been created without the authorization of the legitimate prescriber. This means that it is not an official or valid document, and thus it can be used to facilitate the illegal prescribing and dispensing of medication. Since these forms are unauthorized, they can pose serious risks to patient safety and public health by enabling the distribution of potentially harmful or non-therapeutic substances.

In this context, A describes a prescription form that might be used for illicit activities but doesn't capture the essence of being a "counterfeit." C represents a legitimate prescription blank, which is the opposite of what a counterfeit blank is intended to be. D discusses a prescription form containing a doctor's error, which does not indicate counterfeit status; it simply suggests an erroneous prescription that may still be valid. Thus, the second option accurately characterizes a counterfeit blank as one that is unauthorized.