The correct answer is B. Because nurses and soldiers worked so closely on the battlefield, there was often confusion about which roles they played.
According to the information in the fragment, which describes the duties of nurses on the battlefield, it can be argued that the correct answer is B. Because in the initial part of the fragment the author writes "You can't really draw a sharp distinction between nurses and soldiers "this phrase gives the reader an idea that their roles on the battlefield were not radically defined between nurses and active soldiers. Therefore, the correct answer is B. Because nurses and soldiers worked so closely on the battlefield, there was often confusion about which roles they played