Which of the following is NOT considered a common drug found on the streets in Dallas?

LSD, while a well-known hallucinogen, is not typically associated with the street drug scene in Dallas when compared to the other options listed. The common drugs such as heroin, marijuana, and cocaine have established networks for distribution and usage within the city, often making them more accessible and prevalent in street culture.

Heroin is an opioid that remains a significant issue in many urban areas, including Dallas, contributing to various public health crises. Marijuana has achieved legal status in many places but still circulates on the black market, making it a staple in street drug transactions. Cocaine has a long history of use and distribution in urban settings, maintaining its presence as a popular street drug.

In contrast, while LSD has its dedicated user base, its overall prevalence on the streets does not compare with the other substances, making it less common in the context of this question. This distinction highlights the variations in drug culture and distribution trends prevalent within the city.