Final answer:
General George Washington crossed the Delaware River on December 25, 1776, to successfully attack Hessian forces at Trenton, New Jersey, in a decisive Revolutionary War engagement.
Therefore, option A is correct.
Step-by-step explanation:
General Washington crossed the Delaware River to defeat a German mercenary force known as the Hessians. This event took place on December 25, 1776, during the American Revolutionary War and is famously depicted in Emanuel Leutze's painting Washington Crossing the Delaware. The successful surprise attack on the Hessian forces in Trenton, New Jersey, provided a critical moral boost to the American cause following several military setbacks. The Continental Army under Washington's leadership managed to kill 22, wound 98, and capture over 1,000 Hessian soldiers while sustaining fewer than ten casualties themselves capturing much-needed supplies, weapons, and ammunition.