【单选题】

Florence Nightingale was a woman ahead of time.Before the nineteenth century, the profession of nursing was largely untraineD、Midwives were the only practitioners who had any training at all. For the most part, sick people were looked after by the women of the house in their own homes.

Florence Nightingale began a school in London,England to set the standards for nursing. She was able to do this because she had already established a reputation for her work with soldiers during theCrimean War. She carried a lamp above her head as she walked among the wounded men, thereby earning the nickname "the lady with the lamp. " It was this great lady who lit the way for nursing to become the respected profession it is today.
The style of the passage is most like that found in a(n) ______.
A、personal letter to a trusted friend
B、anthology of short biographies of famous women
C、history of nineteenth-centuryEngland
D、textbook on medicine