Which of the following terms best represents individuals within a larger culture who share their heritage and subscribe to the same value and belief systems.

Ethnic group

Explanation:

Ethnic group is a group of individuals who share genealogy or ancestry, beliefs, culture, society, etc.

Ethnic group is a part of larger society, yet set apart from it. Ethnicity not only have common ancestors but some ethnic groups also share religious beliefs, language, dialects,

An example of an ethnic group is Hans Chinese. Han Chinese share common ancestry of Yellow or Yan Emperor.

So, the correct answer is ethnic group or ethnicity.