Washington, D.C., borders which state?

Washington, D.C. borders both Virginia and Maryland. The correct answer highlights one of the states adjacent to the capital. Virginia lies to the southwest of Washington, D.C., and includes notable areas such as Arlington, which is directly across the Potomac River from the city. This proximity makes Virginia a significant part of the metropolitan area surrounding Washington, D.C.

In addition, the area known as the National Mall, as well as various government buildings and monuments, are situated close to Virginia. Meanwhile, Maryland lies to the east and also shares a border with the capital. It is common for geography questions regarding Washington, D.C. to refer to its borders with these two states, illustrating the unique nature of the District, which is not part of any state but surrounded by them. The other options do not geographically border Washington, D.C., making them incorrect.