The main purpose of this passage is to tell us ______.

A．discussion
B．communication
C．greeting
D．conversation

A．adult education has a short history of about two hundred years
B．in Chautauqua movement people called for rights on studying beyond formal education
C．in the early development phase of adult education, it was funded by the government
D．the Office of Vocational and Adult Education is not the only federal institute in supporting adult education