Final answer:
The attack on Pearl Harbor was a surprise to the U.S. military, resulting in the destruction of many ships and planes.
Step-by-step explanation:
The correct answer is B. Japan's attack on Pearl Harbor was a surprise to the U.S. military.
The attack on Pearl Harbor by the Japanese on December 7, 1941, was a surprise attack. The U.S. military was caught off guard, resulting in the destruction of many ships and planes. The American battleships were indeed floating in calm waters, but it was the element of surprise that allowed the Japanese to carry out their attack successfully.
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