Final answer:
When Washington heard of the attack on Fort Lee, he developed a plan to deceive the British and successfully moved his army to Manhattan.
Step-by-step explanation:
When Washington heard of the attack coming to Fort Lee, he realized that he was trapped and needed to come up with a plan. He requested reinforcements from his forces on Manhattan Island and devised a bold plan to deceive the British. Washington had the new troops pretend to be his entire army, while his actual army silently left the camp and made their way to Manhattan. The British eventually realized that Washington and his army were no longer at Fort Lee.