In the context of ancient Near Eastern cultures, what could be the socio-cultural significance of Naomi's decision to encourage Ruth to marry Boaz in the book of Ruth?

A It was simply Naomi trying to get rid of Ruth. B It was primarily about ensuring Ruth's personal happiness and romantic fulfillment. C It reflects the ancient practice of levirate marriage, aimed at preserving the family line and ensuring the inheritance of the deceased husband, thereby protecting the vulnerable widow and her offspring. D It was a way for Naomi to gain personal wealth through Ruth's new marriage.