Answer:
B) He was fearful of driving away the traders who contributed to Japan's economy.
Explanation:
Tokugawa Ieyasu was a military ruler also know as shogun that ruled Japan during the early 1600s.
Before his reign as Shogun, in 1549, Christian missionaries can to Japan with the aim of converting the Japanese people to Christianity. They also came with muskets, guns and other European goods which the Japanese people had interest and wanted the buy.
Over the years the Missionaries trade expanded and they became very successful, they also involved themselves in the politics of Japan.
Tokugawa Ieyasu, seeing this he became worried, he saw the European missionaries as threats because of their involvement in Japan politics. He felt they caused trouble and were putting down the traditional beliefs of Japan but he could not send them away due to the European goods they sold to the Japanese people.
In the year 1612,Tokugawa Ieyasu became frightened and afraid of religious rebellion in Japan and he forbade Christianity in Japan.