Which of the following is a purpose of drug paraphernalia?

Drug paraphernalia refers to the various tools, equipment, or products that are commonly associated with the use, preparation, or consumption of illegal drugs. The primary purpose of such items is to facilitate the use of these substances, which is often done in a way that circumvents legal restrictions and promotes illicit drug activities. This can include items like pipes, bongs, syringes, or scales, which are specifically designed for drug consumption and can enable a more convenient or effective means of using illegal substances.

The other options do not align with the nature or primary use of drug paraphernalia. For instance, improving agriculture or enhancing medical procedures relates to legitimate activities that do not involve illegal drug use. Increasing the effectiveness of nutritional products also does not connect to the purpose of drug paraphernalia. Therefore, focusing on the facilitation of illegal drug use captures the essential and intended role of such items.