What is the primary distinction between a strigoi and a moroi?

The primary distinction between strigoi and moroi lies in the understanding of their souls and the nature of their existence. Strigoi are often described as the souls of the dead that return to the living world, possessing the ability to leave their bodies. This belief is deeply rooted in various Eastern European folklore, where strigoi can rise from the grave, taking on a more supernatural or undead form, which allows them to interact with the living in a more intense manner.

In contrast, moroi are typically conceived as living individuals who are believed to be afflicted with a certain curse or condition that connects them to vampiric traits. They do not share the same supernatural post-mortem characteristics as strigoi and are primarily viewed as mortals.

This distinction is significant in discussions of vampiric folklore, highlighting how different cultures interpret the nature of life, death, and the supernatural. The belief in the strigoi's ability to leave their bodies emphasizes a more pronounced connection to the undead and vampirism, thereby making option C the correct choice in understanding the dichotomy between the two entities.