How does Kenneth Waltz's first image help us understand why 9/11 had such a profound effect on American policy?

a. The systemic effects of the attack showed that a state could still be the target of an attack, even by individuals, which generates a retaliatory policy executed by that state.
b. Information technology spread the news and images of the attack through the international system so quickly that U.S. policy was bolstered by international support.
c. The domestic level of analysis demonstrates that information technology spread news and images of the attack so quickly that the country as a whole was easily mobilized into response.
d. Human beings are particularly sensitive to threats that are intended by others, that trigger moral outrage, that seem clear and present, and that catch us by surprise.
e. None of these answers is correct.

Answer: d