How can I trasfer to WGS84 coordinate that can publisshed to Google Earth

Discussion created by gn01876978 on Mar 6, 2014
Latest reply on Mar 6, 2014 by MKennedy-esristaff
Hello, every one.
Here comes a problem I meet, when I want transfer coordinate from GCS_WGS_1984 to WGS84. The "geographic transformation (optional)" has so many option, which one I can select? Are there someone meet the problem like me?