Considering the cultural context of the Old Testament, what was the primary significance of the act of gleaning, as exemplified by Ruth in the fields of Boaz?

A It was a common practice for wealthy landowners to display their generosity and attract potential suitors. B It was a legal provision established in the Mosaic Law to provide for the poor and marginalized in society (Leviticus 19:9-10). C It was solely a means for young, unmarried women to find employment during the harvest season. D It was a symbolic gesture of rebellion against the established social hierarchy.