B: oral tradition I think hope this helps :)
Answers:
A. because more people could afford books and learned to read.
C. because new ideas could spread quickly.
E. because it preserved the records of the Han dynasty.
F. because it created the art form of calligraphy.
Although there is some debate regarding the exact date papermaking began in China, the traditional account states that paper was developed during the Han dynasty. Quickly after its introduction, it had many conseuqneces on the population. It made books more widespread, and books became the mark of the educated man. The collections that China possessed surpassed those of Mediterranean empires until the 9th century. Paper was also central to arts such as poetry, painting and calligraphy.
What are the choices for it
The study of rock layers in geography