Read the research question: "How did soldiers use bayonets to win the Battle of Alma in World War I?" Which option shows the best way to broaden the research question? Select one:
1) How were soldiers trained in the use of bayonets prior to World War I?
2) How did soldiers use bayonets to win the Battle of Verdun in World War 1
3) How did the use of bayonets affect the outcome of World War 1?
4) How were the bayonets used in World War I manufactured