Beyond the miraculous nature of the event, what was the primary purpose of the manna provided to the Israelites in the wilderness after their exodus from Egypt?

A To demonstrate God's power over nature and inspire awe. B To provide a readily available food source that required minimal effort. C To test their obedience and reliance on God's provision, teaching them to trust in Him daily for their needs. D To establish a system of trade and bartering among the tribes of Israel.