As a Process of Assimilation,schooling and Its Focus on an "Official

As a process of assimilation,schooling and its focus on an "official" curriculum-common language and the facts of a common history and geography:

A) promote a sense of nationalism and an affinity among societal members
B) foster a commonsense way of thinking
C) promote a strong skill set to participate in the workforce
D) promote upward mobility
E) all of the above