Final answer:
Codeine is classified as a CIII substance.
Step-by-step explanation:
Out of the options provided, codeine is classified as a CIII substance.
Codeine is a prescription opioid pain reliever that is less potent than drugs like morphine or oxycodone. It is classified as CIII because it has a lower potential for abuse and addiction compared to drugs in higher classification levels.
Fioricet, Fiorinal, and lorazepam are not classified as CIII substances.