Base your answer to the following question on the passage below and on your knowledge of social studies. Observation of a Soldier in World War I

Private Archie Surfleet, February 8th, 1918 – We have been in camp near the wood at Écurie for some days now and a more miserable existence it would be hard to imagine. There is nothing but unrest and uncertainty and everyone here is absolutely fed up to the teeth.
- Malcolm Brown, Tommy Goes to War

3. Which hypothesis can best be supported by this passage?
(1) Allied forces were on the verge of winning the war.
(2) Technology had created a military stalemate.
(3) Revolution in Russia hastened the end of the war.
(4) Conditions contributed to low troop morale