Which of the following locations served as the headquarters for general washington’s troops during the winter of 1777-1778?

The location that served as the headquarters for General Washington's troops during the winter of 1777-1778 was Valley Forge, Pennsylvania.

Explanation:

Valley Forge is the place where George Washington camped in the winter of 1777-1778 during the American War of Independence. It is located in southern Pennsylvania, about 35 km northwest of Philadelphia. The place is named after a smithy, located on the Valley Creek River. It was here that Baron von Steuben joined the Washington army.