Part a: which statement expresses the central idea of the text?

a
johnson, jackson, and vaughan challenged prejudice at naca to accomplish what african american women had never been allowed or expected to do before.
b
while all naca “computers” advance women and african american rights, johnson was responsible for grabbing the nation’s attention.
c
the public wasn’t aware of african american women’s role in naca until recently because the organization kept their involvement a secret.
d
johnson, jackson, and vaughan would have gone on to accomplish great things at naca if it weren’t for the discrimination they faced because of their gender and race.