Which of these is one of the 13 original states?

The correct response is Pennsylvania, which was one of the 13 original states that formed the United States following the Declaration of Independence in 1776. Pennsylvania played a significant role in American history, being the site of the signing of the Declaration of Independence and the U.S. Constitution in Philadelphia.

New York is also among the original states and was one of the key states involved in the early formation of the United States, known for its influential role in commerce and immigration. Missouri and California, however, were not part of the original 13 states. Missouri was admitted to the Union in 1821, and California became a state much later, in 1850.