Final answer:
The shot heard round the world refers to the first shot fired in the American Revolutionary War at Lexington and Concord.
Step-by-step explanation:
The shot heard round the world is an event that refers to the battle of Lexington and Concord, which marked the beginning of the American Revolutionary War.
It was the first shot fired in the RevolutionCary War, as mentioned in option A. This shot was fired on April 19, 1775.
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