Final answer:
The central idea of the passage is shaped by the description of Argos, emphasizing the themes of loyalty, remembrance, and the impact of Ulysses' absence on his kingdom, as symbolized by the neglected state of his faithful dog, Argos.
Step-by-step explanation:
The central idea of the passage is most shaped through the author's description of Argos in paragraphs 11-15 by reinforcing the themes of loyalty, remembrance, and the consequences of absence. From the context given, we can deduce that the character of Argos represents more than a mere dog awaiting his master; he symbolizes the state of Ulysses’ kingdom and the neglect suffered during Ulysses' prolonged absence. The description of Argos likely draws parallels to Ulysses' realization of his own failure to protect his kingdom and the effects of his lengthy odyssey.
When Ulysses encounters Argos, the dog's condition and his reaction to seeing Ulysses after so many years could evoke a powerful realization in Ulysses. It is probable that Argos’ state emphasizes the decay and neglect that has befallen the kingdom and the people Ulysses left behind, demanding that he take responsibility.
The neglect shown to Argos suggests how Ulysses’ kingdom has suffered similarly at the hands of the suitors, and now it's time for Ulysses to restore order and justice.