In the book of Ruth, how does the character of Boaz exemplify the concept of 'hesed' (loving-kindness) within the context of Israelite law and social customs?

A By strictly adhering to the letter of the law regarding gleaning, without showing any personal compassion. B By ignoring the needs of Ruth and Naomi, focusing solely on his own agricultural success. C By strategically marrying Ruth for political gain, consolidating his power within the community. D By going beyond the legal requirements to provide for Ruth and Naomi, demonstrating generosity and fulfilling his kinship obligations as a kinsman-redeemer.