The correct answers are A) The Russians lacked the technology to fight successfully against more technologically advanced nations and C) The Central Powers suffered more casualties than the British Empire and the United States.
Although there is no reference to your lessons and activities, we can say that the Russians lacked the technology to fight successfully against more technologically advanced nations and that the Central Powers suffered more casualties than the British Empire and the United States.
Hostilities in World War I started after the assassination of Archduke Franz Ferdinand and his wife Sophie on June 28, 1914.
The German army was one of the best-equipped armies in that time and was determined to win the war. Germans considered that the Russian army lacked the technology to fight successfully against more technologically advanced Germany, but they got it wrong.
When the United States entered the war on April 6, 1917, it was like fresh air to the French, British, and Russian troops. The American army helped move things in the western front and the Allies end up winning the war. The Central Powers suffered more casualties than the British Empire and the United States.