Which of the following best explains why the North Atlantic Treaty was signed by its participating countries?

(A) Because of new enfranchisement laws, citizens demanded their countries join in alliance with other nations. (B) The threat from opposing states was sufficient enough to join in alliance for the sake of protection. (C) The opportunity to re-take colonies lost after World War II could only be acted on through military alliance with other countries. (D) A monopoly on nuclear warfare capabilities compelled nations to join the alliance out of fear.Explanation: NATO was founded to provide defense against the Soviet Union for Western nations, which best aligns with (B). Eliminate (A) because many of the participating nations in NATO had largely enfranchised populations to begin with. Eliminate (C) because NATO, according to the document, is a defensive alliance. Eliminate (D) because the Soviet Union acquired atomic weapons in 1949, breaking the U.S. monopoly.