Answer:
The correct answer is c. ethnicity
Step-by-step explanation:
Ethnicity is first and foremost a form of identification, an identification of one with what oneself and others understand to be their ethnic or ethnic group. Ethnicity denotes a relationship or feeling of belonging. Regarding the term of identification, ethnicity and ethnicity are classifying concepts. The classification is based on very different criteria or "ethnic markers": cultural, linguistic, religious ascriptions, racial traits, common origin, shared activities, etc.