Which characteristic is NOT required for a belief system to be considered a religion?

A belief system does not need to promote community involvement to be classified as a religion. While community and social gatherings are often significant aspects of many religions, they are not universally necessary for a belief system to qualify as a religion.

Religions may exist in individual practice or belief without an organized community structure. For instance, some spiritual beliefs can be deeply personal and practiced in solitude. Therefore, the emphasis on community involvement is not a requirement for the classification of a belief system as a religion; it can exist without this communal aspect.

On the other hand, addressing fundamental questions about existence, morality, and the universe is a common characteristic of religions, alongside having comprehensive doctrines and formal practices or symbols.