Excerpt from the Roosevelt Corollary, 1905

The eternal vigilance which is the price of liberty must be exercised, sometimes to guard against outside foes; although of course far more often to guard against our own selfish or thoughtless shortcomings. . . . It is our duty to remember that a nation has no more right to do injustice to another nation, strong or weak, than an individual has to do injustice to another individual; that the same moral law applies in one case as in the other. But we must also remember that it is as much the duty of the Nation to guard its own rights and its own interests as it is the duty of the individual so to do. . . . It is not true that the United States feels any land hunger or entertains any projects as regards the other nations of the Western Hemisphere save such as are for their welfare. All that this country desires is to see the neighboring countries stable, orderly, and prosperous. Any country whose people conduct themselves well can count upon our hearty friendship.

Use the excerpt from the Roosevelt Corollary to answer the question.

In which of the following scenarios would Roosevelt feel it would be permissible to interfere in the affairs of another country in the Western Hemisphere?

A.
when commercial matters are involved

B.
when the U.S. is instructed to by European powers

C.
when the U.S. feels its own interests are threatened

D.
when certain countries subscribe to leftist ideologies

C. when the U.S. feels its own interests are threatened.