The reason why we must vigorously carry forward the fine traditions of Chinese culture is because of the fine traditions of Chinese culture ( ) A.

Has a distinct national character B.

D Here we examine the reasons for vigorously carrying forward fine traditions.

As a component of traditional culture, excellent traditional culture can play a positive role in the development of society and people, so it needs to be inherited and carried forward. Item D is in line with the meaning of the question; statements A and B are correct, but they are not reasons, but characteristics.

;The statement in item C is obviously wrong.