Which hallucinogen is primarily used in traditional Native American ceremonies?

Mescaline is a naturally occurring psychedelic substance that has been used for thousands of years by indigenous peoples in North and South America, particularly in traditional Native American ceremonies. It is primarily derived from the peyote cactus, which is a key element of various spiritual rituals and has significant cultural importance.

The traditional use of mescaline in ceremonies highlights its role in facilitating spiritual experiences, healing, and communion with the divine, making it a central piece in the practice of certain Native American religions. In these contexts, mescaline is often employed to induce altered states of consciousness that are believed to enhance one's connection to spirituality and nature.

The other options listed do not have the same cultural and historical significance in traditional Native American practices. Psychedelics are a broader category that includes various substances, but not all have traditional ritual use. MDMA, while it may have some use in therapeutic settings, is not traditionally associated with Native American ceremonies. Dextromethorphan, commonly found in cough suppressants, does not have a historical role in these contexts either. Thus, mescaline stands out as the most correct answer due to its specific and recognized use in Native American traditions.