The correct answer is C. Financial support, supplies, and French Naval forces
Step-by-step explanation
During the American Revolutionary War (1775-1783) France was the most important ally of the American patriots against the British crown because France had resentment with the British after their defeat in the Seven Years' War. One way to take revenge for this defeat was through the American War of Independence because the French aristocracy and the people in general viewed with good eyes the American independence movement.
Initially, French aid was secret and was based on money and gunpowder sent from France. After several victories in the battle of the patriotic army, many French voluntarily decided to join the US army, also, ammunition, supplies and naval forces were sent, which would be indispensable for the victory over the British. So, the correct answer is C. Financial support, supplies, and French Naval forces.