Final answer:
The most basic type of religious organization is the religious cult, which represents the least influence in society in a continuum that includes sects, denominations, and ecclesia.
Step-by-step explanation:
The most basic type of religious organization is the religious cult. This term is part of a continuum of religious organizational influence, with cults being the least influential and ecclesia being the most influential. Cults often start as small, unorganized groups centered around charismatic leaders or new teachings that differentiate them from more established religious institutions. Over time, these groups can evolve into more structured and influential organizations, and may develop into sects, denominations, or even an ecclesia. Each stage represents a different level of integration into societal norms and recognition by the broader community.