To give the reader more information about the character, the author can:
(c) give information about events in a story that are true. These will help to know more about the character if the facts are related to him. For example if they talk about something good or bad done by the character, or describe a particular situation in which the character was present and the reader can appreciate part of the personality.
(d) give information about the social status of the character. In this case the example helps to consider the context surrounding the character. Not so much about his personality since social status does not always affect personality. Rather, personal experiences added to individual characteristics.