Final answer:
Napoleon opposed the Haitian Revolution and sent troops to re-establish control, but the campaign failed due to disease and strong Haitian resistance. The correct option is B.
Step-by-step explanation:
Napoleon Bonaparte's reaction to the revolution in Haiti was to oppose it and he attempted to suppress it by sending troops. Napoleon sent 40,000 troops to Hispaniola in 1802 to re-establish French control and squash the slave revolution. Initially, the French forces were successful, but they ultimately lost the conflict due to diseases like yellow fever and the determined resistance of the Haitian fighters.
Napoleon's effort to subdue Haiti failed, leading him to abandon his plans for a French empire in the New World, which included selling the Louisiana Territory to the United States in 1803. This failure in Haiti was a significant setback in Napoleon's colonial ambitions.