"In 1970, Congress passed the Controlled Substances Act to regulate the manufacture, importation, possession, use, and distribution of drugs. This act created five categories, or schedules, into which controlled substances are divided. These schedules are ranked in order of decreasingly stringent regulation, from the most stringent (Schedule I) to the least stringent (Schedule V). The following slides briefly describe the definitions of each schedule, the regulations each schedule provides, and the substances each schedule contains."
This passage is an example of a
A) Definition
B) Comparison
C) Classification
D) Explanation