Which chapter was the first to win the Lion Trophy?

The correct answer is Delta Phi. The Lion Trophy is awarded to the chapter that demonstrates excellence in various areas, including scholarship, brotherhood, and community service. Delta Phi set a high standard and was the first to receive this prestigious award, showcasing its commitment to the values and ideals of Delta Kappa Epsilon. This recognition highlights the chapter's exceptional achievements and contributions to the fraternity and serves as an inspiration for other chapters to aspire to similar levels of excellence.

In the context of the details provided, the other chapters do not have the historical recognition associated with being the first to win the Lion Trophy, thereby making Delta Phi the standout choice.