Which sentence uses commas correctly?


To find out about endangered animals Nick you can write to the World Wildlife Fund, 1250 Twenty-Fourth Street N.W., Washington, D.C. 20077.


To find out about endangered animals, Nick, you can write to the World Wildlife Fund 1250 Twenty-Fourth Street N.W. Washington, D.C. 20077.


To find out about endangered animals, Nick, you can write to the World Wildlife Fund, 1250 Twenty-Fourth Street N.W., Washington, D.C. 20077.