B. The patriots' victory persuaded the French to form an alliance.
Explanation:
Battle of Saragota was fought in 1777, it was one of the main battles of American Revolution and is considered to be the major turning point in the American revolution. Battle of Freeman's Farm and Bemis Heights were two engagements of the Battle of Saragota. Horatio Gates was the general of the american forces and John Burgoyne led the British forces, he surrendered on October 17 with 6,000 British soldiers.
<u>The American victory convinced France and other countries to help it against British and give recognition to US.</u>
