Final answer:
The answer is option A. George Washington and Benedict Arnold were the pair that made significant military contributions during the American Revolution, Washington as the Continental Army's leader and Arnold through key early victories.
Step-by-step explanation:
The pair of individuals who made significant military contributions to the outcome of the American Revolution are George Washington and Benedict Arnold. George Washington served as the Commander-in-Chief of the Continental Army and his strategic leadership was pivotal to the revolution's success. Benedict Arnold, though later infamous for his treason, was initially a valuable and courageous leader in key battles such as the capture of Fort Ticonderoga and the Battle of Saratoga, which were crucial to the American victory.