Which of the following drugs is included in the cannabis category?

The correct answer is Hashish, as it is a concentrated form of cannabis, derived from the resin of the cannabis plant. Hashish contains a high concentration of THC (tetrahydrocannabinol), which is the primary psychoactive component responsible for the drug's effects. Since it is produced from cannabis, it is classified within the same category as marijuana, allowing for it to share similar effects, uses, and legal considerations related to cannabis consumption.

In contrast, the other options represent entirely different categories of drugs with distinct chemical compositions and effects. Cocaine is a powerful stimulant derived from the coca plant. Methamphetamine is a potent central nervous system stimulant that is chemically related to amphetamine. Heroin is an opioid derived from morphine, which is extracted from the poppy plant. Each of these substances has different effects and is categorized separately from cannabis-related products.