Which of the following best represents the key alliance of Great Britain, France, Serbia, and Russia during World War I?

The key alliance of Great Britain, France, Serbia, and Russia during World War I is best represented by the Triple Entente. This alliance, formed in the early 20th century, was established to counterbalance the threat posed by the Triple Alliance of Germany, Austria-Hungary, and Italy.

The Triple Entente was not a formal military alliance, but rather a diplomatic understanding among the three countries to support one another in the event of conflict, which ultimately played a significant role in the dynamics of World War I. This cooperation was built on a series of bilateral agreements, such as the Entente Cordiale between Britain and France and the Franco-Russian Alliance.

In contrast, the other options refer to different historical contexts or alliances that do not encompass the nations listed in the question. The Triple Alliance specifically refers to the coalition of Germany, Austria-Hungary, and Italy, which was the opposing power to the Triple Entente. The Central Powers generally refer to Germany and its allies during World War I, including Austria-Hungary and the Ottoman Empire. The League of Nations, established after World War I, aimed to promote international cooperation and prevent future conflicts but is not related to the alliances of the pre-war period.

Thus,