Which of the following street names refers to ecstasy?

The designation of "XTC" as a street name for ecstasy is rooted in the drug's common abbreviation. Ecstasy is chemically known as MDMA (3,4-methylenedioxymethamphetamine), and the term "XTC" captures the essence of the drug's name while also reflecting its euphoric effects, which many users seek. This shorthand not only simplifies communication among users but also reinforces the cultural identity that surrounds ecstasy use in social settings.

The other terms listed do not correspond to ecstasy. "Bars" typically refer to benzodiazepines, "Buddha" is often associated with marijuana, and "Whippets" is a term used for nitrous oxide cartridges. Thus, understanding the specific slang for different substances helps in appreciating the contexts and cultures surrounding drug use, while "XTC" remains a clear and recognized reference to ecstasy.