Check for Understanding III - Government Regulation of Controlled Sub: Toxicology &Controlled Substances 2015 Schedule one substances have __ Moderate potential for abuse and dependency Approved medicinal use Light potential for abuse and dependency High potential for abuse and dependency

## Step 1<br />The problem is about the classification of controlled substances, specifically Schedule I substances, according to the United States' Controlled Substances Act. This act categorizes drugs and other substances into different schedules based on their potential for abuse, medical use, and safety under medical supervision.<br />## Step 2<br />Schedule I substances are considered to have the highest potential for abuse and dependency. This is because they are defined as drugs with no accepted medical use in the United States, a lack of accepted safety for use under medical supervision, and a high potential for abuse.<br />## Step 3<br />Given the options, the correct answer is "High potential for abuse and dependency". This is because Schedule I substances are known for their high potential for abuse and dependency.