Ethnicity describes shared:
beliefs
language
religion
any of the above

Any of the above

Explanation:

Ethnicity is represented by the collectivity of individuals that differentiates by their socio-cultural specificity, reflected mainly in language, religion, beliefs and ways of acting;

The term ethnicity is not synonymous with race. The word race has fallen into disuse by the scientific community when it corresponds to different human groups. The idea of ethnicity is a different concept from the social notion of race that was used until the mid-twentieth century, and encompasses more cultural aspects.

a: social security and social programs