How does the narrative of Ruth, a Moabite woman, challenge and expand the traditional understanding of covenant membership and the promise of blessing in the Old Testament?

A It demonstrates that obedience to the Mosaic Law was sufficient to overcome any ethnic or national barrier to inclusion in the covenant community. B It illustrates that God's grace extends beyond the boundaries of Israel, highlighting the importance of loyalty and faithfulness, even from those outside the covenant, as instrumental in fulfilling God's redemptive purposes and integrating them into the lineage of David and ultimately, Jesus. C It suggests that intermarriage with foreign women was acceptable as long as they converted to Judaism and adopted Israelite customs. D It emphasizes the importance of economic prosperity and social status in determining one's worthiness to participate in the blessings of the covenant.