Question

People who perceive themselves as distinct in terms of language, origins, physical appearance, or region of residence are members of the same...

		sectarian group
		country
		nationalist party
		ethnic group

Answer 1

The ethnic group can be defined as a social category based on common culture or nationality.  

In other words, it can be said that an ethnic group is a category of people who recognize with each other based on similarities for example as a common ancestry, language, society, culture or nation.

hence it can be said that People who perceive themselves as distinct in terms of language, origins, physical appearance, or region of residents are members of the same ethnic groups.

Hence option fouth is the correct answer.

Option fourth are ethnic groups.