The correct answer is B. prosperity, stable government, and advances in farming.
TANG DYNASTY
The Tang Dynasty, under Emperor Taizong Li Shimin's governing, made the economy and commerce flourished and there was social stability.
During Emperor Xuanzong's reign, the national economy, politics and culture all developed rapidly. This period was called the Heyday of Kaiyuan, and it was the period of higher prosperity.
SONG DYNASTY
Song Dynasty was successful in many aspects. In agriculture and handicraft industry, the technology reached an advanced level, and the development of the commodity economy exceeded the previous level.