Florence Nightingale was a pioneer in the development of modern medicine. She was an innovator who initiated such practices as sanitization of hospital wards and isolation of actively infected patients. She was not a collaborator who rejected these practices, nor was she a maverick who protested them. She was an individual who saw the need for these practices and worked to implement them. The other choices are incorrect. A collaborator is someone who works with others. Nightingale did not work with others to reject these practices. A maverick is someone who goes against the established order. Nightingale did not go against the established order by protesting these practices. A pioneer is someone who is the first to do something. Nightingale was not the first person to suggest these practices, but she was the first person to successfully implement them. An individualist is someone who does things their own way. Nightingale did not do things her own way by standardizing these practices. She worked with others to standardize them.