What did the Mahabharata reinforce regarding sons and their fathers' resources?

Sons had the right to claim the resources, including the throne in the case of kings, of their fathers upon their demise.

The correct answer is Option 3 - Sons had the right to claim the resources, including the throne in the case of kings, of their fathers upon their demise.

At one level, the Mahabharata is a story about this. It describes a feud over land and power between two groups of cousins, the Kauravas and the Pandavas, who belonged to a single ruling family, that of the Kurus, a lineage dominating one of the janapadas. Ultimately, the conflict ended in a battle, in which the Pandavas emerged victorious. After that, patrilineal succession was proclaimed. While patriliny had existed prior to the composition of the epic, the central story of the Mahabharata reinforced the idea that it was valuable. Under patriliny, sons could claim the resources (including the throne in the case of kings) of their fathers when the latter died.