Final answer:
The claim that substance abuse problems are limited to individuals at the extreme ends of the cultural spectrum is false. Substance abuse can affect individuals from any socioeconomic, ethnic, or cultural background.
Step-by-step explanation:
The statement that not all socioeconomic, ethnic, or cultural classes have problems with drug and substance abuse—just those persons at the opposite ends of the cultural spectrum—is false. Drug and substance abuse issues are complex and multifaceted, cutting across all layers of society. Though certain social conditions, such as poverty or wealth, may influence patterns of use, addiction and abuse can affect people irrespective of their socioeconomic, ethnic, or cultural background. For instance, the temperance movement emerged partly due to new social conditions such as increasing urbanization and immigration, highlighting concerns across various social strata. Similarly, stereotypes about class-specific preferences (e.g., the upper class enjoying luxury and the lower classes preferring more modesty) are generalizations and do not accurately reflect the complexities of people's tastes and behaviors across different classes.