Chen is writing a report on the most common types of drugs. People are most likely to become addicted to or abuse. What is the LEAST appropriate type of drugs to include in this report?

The least appropriate type of drugs to include in this report would be drugs that are not commonly abused or addictive, such as over-the-counter medications like ibuprofen or vitamins and supplements. These drugs do not typically pose a significant risk of addiction or abuse and therefore would not be relevant to the topic of the report.