The 'Valley of Dry Bones' vision in Ezekiel 37 is primarily a prophecy concerning:

A The literal physical resurrection of all deceased Israelites at the end of days. B The spiritual and national restoration of Israel after the Babylonian exile, symbolized by the bones coming back to life. C A warning against idolatry and the worship of false gods, illustrated by the desolate state of the valley. D The future judgment of the wicked and their eternal separation from God.