The primary purpose of the passage is to A. describe the changes in musical style that samba has undergone since the eighteenth century B. argue that while samba, the musical genre, is a fitting symbol of Brazilian identity, samba, the dance, is not C. propose a new vision of Brazilian identity symbolized by earlier Brazilian sacred dances of African origin D. show how different views of samba's history affect the debate about samba as a symbol of Brazilian identity E. question the idea that samba is important as a symbol of Brazilian identity