Final answer:
Admiral Chester W. Nimitz said "Uncommon valor was a common virtue," not the options provided (George Washington, Daniel Morgan, Benedict Arnold, or Benjamin Lincoln).
Step-by-step explanation:
The quote "Uncommon valor was a common virtue" was stated by Admiral Chester W. Nimitz. This statement was made in commendation of the Marines' bravery in the Battle of Iwo Jima during World War II. This answer is not among the provided options, which include a) General George Washington, b) Brigadier General Daniel Morgan, c) Major Benedict Arnold, and d) Major General Benjamin Lincoln, suggesting that there may be an error in the question or the options provided.