The best explanation of how the American, French, and Haitian Revolutions are related is:
Debt from supporting the American Revolution led King Louis XVI to raise taxes at the Estates-General. The Third Estate objected to new taxes and wrote the Declaration of the Rights of Man and of the Citizen. The declaration inspired a revolt of the enslaved population in Haiti.
This response correctly outlines the sequence of events and connections between the revolutions, highlighting the influence of the financial burdens faced by France after supporting the American Revolution, the reaction of the Third Estate, and the impact of their declaration on the Haitian Revolution.