The major topics of historical l

The major topics of historical linguistics do not include ______.
A、the historical development of languages and processed involved in language change
B、the nature of language change and its causes
C、variation in language in different places and among different groups at a given point of time
D、methods to establish the relationship between languages that belong to the same language family
【正确答案】：C
【题目解析】：Historical linguistics refers to the studies of language change over various periods if time and at various historical stages. 参见教材P125-126。