What is a characteristic physical feature of cocaine?

Cocaine is recognized for its characteristic physical feature as an off-white crystallized powder. This powdery form comes from the processing of coca leaves and is typically used recreationally. Its appearance is distinct, sometimes described as fine and crystalline, which aids in its identification, especially in a law enforcement context.

The other substances presented in the choices represent different types of drugs. For example, the green leafy substance describes marijuana, which has a very different look and chemical profile. The black-brown tarry goo is typical of heroin, particularly in its black tar form, while blotter paper is a medium used to distribute LSD, often featuring artwork or designs. Understanding these characteristics is important for proper identification and response in law enforcement scenarios.