For socio-cultural reasons, the

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】：C
【题目解析】：For socio-cultural reasons, the high variety is regarded by many people as a more correct or purer version of the language, reflecting a social bias against the more colloquial low variety.