I don't know how I'd answer that. I was probably asked something similar on my rho chi application, but I don't remember what I wrote.
AGDLynn has given some good advice. You may want to talk about some of the benefits of sorority life in general, and the good that GLOs do for the university and local community. But keep it in terms of "all sororities" or "all GLOs" rather than "my sorority".
Good luck with the application - The year I was a rho chi was my most enjoyable year of rush.
