Language planning refers to any attempt by a government, etc. to choose a particular speech variety and spread the use of it, including its pronunciation and spelling systems, across ______ boundaries. ()

Language planning refers to any attempt by a government, etc. to choose a particular speech variety and spread the use of it, including its pronunciation and spelling systems, across ______ boundaries. ()

A.social

B.regional

C.cultural

D.political

正确答案是B