The most likely way that Prince Shotoku would have facilitated the introduction of Chinese culture to Japan would be:
B. He sent scholars to China to learn about the culture directly and introduce aspects to Japan.
During Prince Shotoku's reign in the early 7th century, direct cultural exchange often occurred through diplomats, scholars, and envoys who traveled between countries. This approach allowed for a more authentic and comprehensive understanding of Chinese culture, which could then be adapted and integrated into Japanese society.