Which of the following is NOT considered marihuana?

The correct answer is based on the classifications of various substances related to the cannabis family. Marihuana is primarily derived from the cannabis plant, which includes both Cannabis sativa and products related to it, such as hemp and hashish.

Hemp is a variety of Cannabis sativa that is cultivated for industrial purposes, especially for its fibers, seeds, and oil, and it contains very low levels of THC (the psychoactive compound). Hashish is a concentrated form of cannabis made from the resin of the plant, also considered a form of marihuana due to its high THC content.

In contrast, opiates are substances derived from the opium poppy and have a wholly different chemical structure and effects from those related to cannabis. Therefore, it does not fall under the category of marihuana. Understanding these distinctions is crucial for law enforcement and relates to the legal definitions and regulations surrounding these substances.