Final answer:
Ongka employs persuasion, social obligation, and reciprocity to ensure participation in the moka, leveraging his influence and prestige, which is an example of soft power.
Step-by-step explanation:
In the documentary Ongka's Big Moka: The Kawelka of Papua New Guinea, Ongka, a leader of the Kawelka tribe, utilizes various methods to ensure participation in the moka, a ceremonial gift exchange. He uses persuasion, social obligation, and reciprocity to assemble resources and mobilize people. Ongka's power is largely based on influence and prestige, which he has accrued through previous successful exchanges and his ability to persuade others. This type of power is characterized as soft power, as opposed to coercive power.