Answer:
The correct answer is A. France formed an official alliance with America during the Revolutionary War, as this image shows.
Step-by-step explanation:
During the first years of the war, the French hastened to provide support to the American rebels with weapons and funding since the first months of the conflict; after the important victory achieved by the Americans in the Battle of Saratoga on October 7th 1777, France decided to go more actively into the field and on February 6th 1778 signed an alliance treaty with the Thirteen Colonies to then declare war on Great Britain a month later. In 1779, the Kingdom of Spain joined the side of France (which led to the Anglo-Spanish war), followed in 1781 by the Republic of the Seven United Provinces (which gave rise to the fourth Anglo-Dutch war).