And I have not the slightest doubt that good men from everywhere in this country, from the Great Lakes to the Gulf of Mexico, from the Golden Gate to the harbors along the Atlantic, will rally together now in this cause to vindicate the freedom of all Americans. For all of us owe this duty; and I believe that all of us will respond to it.

This statement is an example of

A. an appeal to authority.

B. an emotional testimonial.

C. a transfer of feelings.

D. a call to action.