What is a werewolf described as in folklore?

A werewolf, according to folklore, is indeed described as a human with the ability to shapeshift into a wolf-like creature. This transformation is often depicted as occurring during a full moon and is linked to various myths and cultural narratives across different societies. The concept of a werewolf typically embodies themes of duality, human vs. beast, and the loss of control over one's primal instincts.

The portrayal of werewolves in folklore goes beyond mere physical transformation; it often includes moral or supernatural implications, such as punishment for wrongdoing or a curse that induces a tragic fate. In many tales, the werewolf's human side is often torn between the desire for violence and the remnants of human emotion, which adds depth to the character.

The other options describe completely different supernatural beings or states. Ghosts are typically associated with the spirits of the dead, vampires are characterized by their thirst for blood and immortality, and warriors in trance-like states generally refer to individuals in altered states of consciousness, often within specific cultural practices or rituals. Thus, these choices do not align with the specific characteristics and lore surrounding werewolves.