Which nurse most likely kept records on sanitation techniques and the effects on health?

A) Florence Nightingale
B) Mary Nutting
C) Clara Barton
D) Lillian Wald

Nightingale was the first practicing nurse epidemiologist. Her statistical analyses connected poor sanitation with cholera and dysentery. Mary Nutting, Clara Barton, and Lillian Wald came after Nightingale, each contributing to the nursing profession in her own way. Mary Nutting was instrumental in moving nursing education into universities. Clara Barton founded the American Red Cross. Lillian Wald helped open the Henry Street Settlement.