Answer:
While the USA and Australia may share a common language, understanding subtle differences between the two cultures is essential.
As much as C. has a partiality towards the cause of The Great War, it's most likely answer B.
The Germans declared war on the Russian Empire, guaranteed the independence of Serbia, because of their alliance backing Austria, and Serbia which the Austrians declared war on as a result of the Serbian citizen who shot the heir to the throne.
The rest of Europe's involvement was a chain reaction of countries coming to the aid of another. France with defending Russia, Britain defending Belgium, etc.
George Washington was elected unanimously twice as the first president of America. He helped define the future role and authority of the office. He understood well that it is necessary to revive executive power in the country. He believed that the precedents he had to make was necessary for the republic to function, but did not intend to implement a dictatorship or a monarchy. He appointed the Cabinet, and proposed the main laws to the Congress, with the intention of the Presidency to be powerful. He spent a lot of time doing government jobs, organizing meetings with the public in the afternoon, as well as dinner with invited guests.
He wanted to spend time on his property, especially under the pressure of obligations and merciless journalists, and thus made the president's withdrawal into his homes, under pressure from the public, acceptable. He retired after eight years and thus set the precedent that the president could only serve two mandates. It was later broken by Roosevelt.
The right answer is He lived in the White House.