Which statement best describes japanese attitudes towards religion in the first millennia ce

Both Shinto and Buddhism were practiced widely, often by the same  people.

Explanation:

Typically, Average Japanese did not take religion too seriously. The moral standard in japan were derived from their long lasting cultures rather than influences from region.

In Japan , Shinto and Buddhism co-exist harmoniously with one another since the teaching of both these religion did not impose some sort of divine punishment for those who adopt different religion. Because of this, many of the japense actually identify as both.