Which of the Following Best Describes How Lillian Wald Helped

Which of the following best describes how Lillian Wald helped encourage the idea of school nurses in the schools?

A) She brought political pressure to bear on school boards through her political action movement.
B) She persuaded very wealthy women to convince their husbands to fund such positions.
C) She demonstrated that school nurses decreased absenteeism by 50%.
D) She used volunteer nurses until school boards were persuaded to fund such positions.