Considering the cultural context of the ancient Near East, what was the primary social significance of the act of gleaning, as exemplified by Ruth in the fields of Boaz?

A It was a customary practice to provide for the poor and marginalized, ensuring they had access to food and sustenance. B It was a competitive activity among the poor to demonstrate their work ethic and earn favor with landowners. C It was a symbolic gesture of submission and servitude to the landowner. D It was a form of taxation imposed on the wealthy landowners to support the temple.