What does the author's second and third use of the key term illusion suggest about foreign policy?

If your choices are the following:

A. Both isolation and omnipotence are impossible to achieve.

B. The United States will someday be able to balance isolation and omnipotence.

C. It was inevitable that omnipotence would replace isolation.

D. The United States missed a chance to be separate from Europe.

Then the answer is A.