The correct answer is option e. "One relied on multilateralism and the other was unilateral almost to a fault". After Cold War, the first Bush administration relied on highly multilateralist policies by retrieving the US aggressions, cobbling together an unprecedented international coalition. On the other hand, President George W. Bush Jr. used highly unilateralism foreign polices, when the now known as Bush Doctrine were adopted. Under this precept, the president was able to do the one-sided action of invading Iraq since it was a potential threat for America.