Answer: The Piropian response best illustrates the danger of:
D. ) self-fulfilling prophecies.
Explanation:
A self fulfilling prophecy is a thought or idea becoming true after one directly or indirectly causes it. The country of Superlia increased the size of its military force because its leaders inappropriately anticipated that their rival, the country of Piropia, would do the same. The Piropians ONLY felt it was necessary to respond AFTER the Superlian military buildup with a military expansion of their own. Therefore, the Piropians were victims of an indirectly created, self fulfilling prophecy of military expansion.