问题：

[单选题]What function do "these men and women", "old and young" and "with different dreams and disapointments" carry in the third sentence of the passage that is analyzed?Eyi答案窝(daanwo.com)-大学作业答案分享平台
Amodifying complex cellsEyi答案窝(daanwo.com)-大学作业答案分享平台
Bexplaining complex cellsEyi答案窝(daanwo.com)-大学作业答案分享平台
Cdescribing features of complex cellsEyi答案窝(daanwo.com)-大学作业答案分享平台
Dillustrating functions of complex cells