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.