A biography is a written account of someone's life. This is different from an autobiography, which is produced when the writer is actually the subject of the book. There can be many versions of a biography, and these versions may have very different angles, views, and conclusions.
A biography is a narrative account that covers the events of a particular person's experience, but different writers may choose to emphasize different events.
If you are required to write a biography, you should collect a number of published works about that individual, and include a variety of resources that might include books, articles, letters, and diaries.

