Which type of appeal is the president using in this part of his speech?

"our responsibility is to all of the people in this country. this is a great national crusade to destroy enforced idleness which is an enemy of the human spirit generated by this depression. our attack upon these enemies must be without stint and without discrimination. no sectional, no political distinctions can be permitted. it must, however, be recognized that when an enterprise of this character is extended over more than three thousand counties throughout the nation, there may be occasional instances of inefficiency, bad management, or misuse of funds. when cases of this kind occur, there will be those, of course, who will try to tell you that the exceptional failure is characteristic of the entire endeavor. it should be remembered that in every big job there are some imperfections."

a.)appeal to reason
b.)appeal to emotion
c.)appeal to ethics
d.)appeal to individuals