Read this passage from franklin delano roosevelt's address to the nation after the attack on pearl harbor: indeed, one hour after japanese air squadrons had commenced bombing in the american island of oahu, the japanese ambassador to the united states and his colleague delivered to our secretary of state a formal reply to a recent american message. and while this reply stated that it seemed useless to continue the existing diplomatic negotiations, it contained no threat or hint of war or of armed attack. which statement is the best example of an implicit idea from this passage? a. japan had previously warned the united states that the country would attack if its demands were not met. b. japan used dishonesty and deceit in its negotiations with the united states. c. japan's message contained no threats, nor did it warn of an armed attack against the united states. d. japan and the united states tried to maintain open channels of honest communication.