Answer:
3-The unemployment rate increased.
Step-by-step explanation:
The World War I happened in July 28, 1914 to November 11, 1918. When the World War I, the result was not so happy as expected but it came with falling wages, rising unemployment and worsening working conditions that led to discontent in the employment sector.
Military persons participated in the war sent home without any further employment and due to division, population increased that caused high chances of unemployment.
Hence, the correct answer is "3-The unemployment rate increased".