The Star Spangled Banner was written in:

O A. New York.

O B. Boston.

O C. Baltimore.

O D. Philadelphia.

C. Baltimore

Explanation:

The anthem's history began the morning of September 14, 1814, when an attorney and amateur poet named Francis Scott Key watched U. S. soldiers-who were under bombardment from British naval forces during the War of 1812-raise a large American flag over Fort McHenry in Baltimore, Maryland.

I think that in Boston, im not sure but