In this excerpt from the Japanese declaration of war, which phrase illustrates the use of ethos?

a. Patiently have we waited and long have we endured, in the hope that our Government might retrieve the situation in peace
b. nullify our Empire's efforts of many years for the sake of the stabilization of East Asia
c. our Empire for its existence and self-defense has no other recourse but to appeal to arms and to crush every obstacle in its path.
d. in our confident expectation that the task bequeathed by our forefathers will be carried forward