Final answer:
Glaucus threatened to take the Lycians home typically as a response to perceived disparities in honor or spoils, which relates to option c. The correct option for this scenario would be 'He wanted a share of the spoils.'
Step-by-step explanation:
In Book 17 of the Iliad, there's a moment where Glaucus threatens to take the Lycians back home. However, the choices provided do not directly match with an incident solely from Book 17 of the Iliad. But, it's worth noting that discontent often arises within the ranks of allies in such epic tales, usually due to disparities in respect, honor, or the distribution of spoils.
Taking this into account, the most similar answer to potential reasons found in similar narratives is c. He wanted a share of the spoils. Leadership often had to be mindful of the needs and rewards of their allies, as warriors fought not only for glory but also for tangible rewards.
Classic literature and epic poems frequently portray the complexities of war, alliances, and the human psyche. Leaders in these works must balance numerous factors to maintain cohesion and loyalty among their troops. The answer provided reflects the kind of considerations that leaders like Glaucus would have in the narrative context.
Thus, the answer reflecting Glaucus's action, based on patterns seen in historical and literary contexts of alliances and involving a share of the spoils, would be option c.