Which of these cities is an American state capital?

Boston is the capital and most populous city of the Commonwealth of Massachusetts in the United States. Boston is also the seat of Suffolk County, although the county government was disbanded on July 1, 1999. The city proper covers 48 square miles (124 km2) with an estimated population of 673,184 in 2016, making it the largest city in New England and the 23rd most populous city in the United States.

One of the oldest cities in the United States, Boston was founded on the Shawmut Peninsula in 1630 by Puritan settlers from England. It was the scene of several key events of the American Revolution, such as the Boston Massacre, the Boston Tea Party, the Battle of Bunker Hill, and the Siege of Boston.

Houston is the most populous city in the state of Texas and the fourth-most populous city in the United States. Austin is the capital of the U.S. state of Texas.

The City of New York, often called New York City or simply New York, is the most populous city in the United States. Albany is the capital of the U.S. state of New York.

New Orleans is a major United States port and the largest city and metropolitan area in the state of Louisiana. Baton Rouge is the capital of the U.S. state of Louisiana.