The correct option is B Written source of history
Necessary Training for maintenance of Written source of history include:
(1) Knowledge of scripts like Brahmi,
Modi, Persian and their development.
(2) Basic knowledge of social
organisation and traditions, literature
and culture, dynasties, administrative
systems, etc. of past societies.
(3) Knowledge of various schools and
styles of painting and sculptural art
and history of their development, etc.