What does the date mentioned in paragraph 2 help the reader understand?

Responses
A Most noble people in Japanese society were martial artists.Most noble people in Japanese society were martial artists.
B Martial arts was not a new idea in Japan in the 12th century.Martial arts was not a new idea in Japan in the 12th century.
C Lady Tomoe was the first female martial artist of Japan.Lady Tomoe was the first female martial artist of Japan.
D Following the tradition, Lady Tomoe became a martial artist.

1 answer

B Martial arts was not a new idea in Japan in the 12th century.