For socio-cultural reasons, the high variety is regarded by many people as a more correct or purer ______ of the language, reflecting a social bias against the more colloquial low variety.

For socio-cultural reasons, the high variety is regarded by many people as a more correct or purer ______ of the language, reflecting a social bias against the more colloquial low variety.

A.diglossia

B.bilingualism

C.version

D.domains

正确答案是C