They give more/additional information about a certain topic of research.
They help learns to know what they may expect to see on the field
The answer is B. Buddhism. This is because Buddhism, which started in India, came to Japan and became a major religion. The local Japanese people already had their own religion (which focused on nature's spirits and the spirits of their ancestors), so they took some of the beliefs of Buddhism and mixed it with their own cultural beliefs. I hope this helps!
1 is true
2 is also true
3 is false
