Question

Which of these sentences is punctuated correctly?

My family visited Washington, D.C. and spent three days exploring The Smithsonian.

My family visited Washington D.C., and spent three days exploring The Smithsonian.

My family, visited Washington, D.C., and spent three days exploring The Smithsonian.

My family visited Washington, D.C., and spent three days exploring The Smithsonian.

Answer 1

My family visited Washington D.C., and spent three days exploring The Smithsonian.