She is a naive person with a_______ nature, so she depends on her boyfriend almost everything.

A．there're no skilled typists years ago and they had to hire from abroad
B．the corporations didn't want to pay American typists to transcribe charge slips
C．there's something on the order of fungibility in the use of certain skills
D．it's same with what happened to Indian technicians employed by other nations

A．exposition
B．narrative
C．prose
D．argumentation