Answer:
C) Fighting for the United States in the American Revolution.
Step-by-step explanation:
He was a French aristocrat who fought in the American Revolution War commanding American troops. The most notorious battle in which he fought was the Siege of Yorktown. He then returns to France and was a key figure in the French revolution and the July revolution.
When he was young he traveled to the United States convinced that the American cause was noble. He was made major general and then traveled back to France to seek up French support.
I hope this answer helps you.