The word" imperative"( Para. 1 )most probably refers to something ______.

A．meritocracy can never be realized without diversity
B．American political circles will not accept diversity
C．it is unlikely that diversity will occur in the U. S. media
D．minorities can only enter the fields where no debate is heard about diversity

A．they have a vision from the mountaintop
B．they have warm feelings and emotions
C．they can serve as concrete examples of noble principles
D．they can make people feel stronger and more confident