Final answer:
George Atherton was associated with the Phi Gamma Delta fraternity. This connection is noteworthy due to his later role as president of The Pennsylvania State University.
Step-by-step explanation:
The fraternity associated with George Atherton is b) Phi Gamma Delta. George W. Atherton, who later became the president of The Pennsylvania State University, was a member of Phi Gamma Delta during his time in college. This connection is significant because of Atherton's influence on the university and his legacy in higher education. Fraternities often leave lasting impressions on their members, and in Atherton's case, this association was part of his formative years that carried through in his contributions to Penn State.