At what age did Tina last smoke pot?

The correct choice indicates that Tina last smoked pot at the age of 20 or 21. This is significant as it reflects a period during which many individuals may engage in recreational substance use, often associated with college years or young adulthood. Tina's response can provide insights into her past behaviors, patterns of substance use, social influences, and emotional development during that stage of her life. Analyzing this information helps in understanding Tina's overall mental health, coping mechanisms, and social interactions at that age.