Effects of race at naca could also be felt professionally. the black west computers were paid less than their white counterparts. they had lower titles, even when they had more experience or education. most never received promotions. one exception was dorothy vaughan. after years of effort and resistance, vaughan was the first black person to be named a naca supervisor in 1948. the ibm 7090 machines started to replace the work of human computers. but vaughan studied to become an expert fortran programmer. she advocated for the other west computers throughout her career. vaughan some of the most talented computers out of the pool and into the scientific teams. what organizational structure is used here? a. comparison/contrast b. cause/effect c. problem/solution d. sequence