When delivering a controlled substance, which condition must be met?

The correct answer is that the individual must know the substance is controlled. In legal terms, knowledge of the nature of the substance being delivered is a critical component of establishing intent. For charges related to the delivery of controlled substances to hold, it must be demonstrated that the person engaged in the act knew that they were dealing with a substance categorized as controlled under the law. This knowledge helps establish culpability, as ignorance of the substance's legal status generally does not absolve an individual from liability.

When someone is accused of delivering a controlled substance, proving that they had knowledge of the controlled nature of the substance is often key to the prosecution's case. In many jurisdictions, this aspect is anchored in the idea that individuals should be aware that their actions—especially when involving substances that can have legal consequences—are within the scope of the law.

The other options do not align with the legal standards defining the delivery of controlled substances. Personal consumption of the substance, casual possession, or altruism are not legal defenses or conditions that mitigate responsibility in such cases. The law tends to focus on the knowledge of the substance's status rather than the motivations or circumstances surrounding its delivery.