Final answer:
The Fellowship of Christian Athletes was the first nondenominational organization aimed at promoting religion among coaches and athletes.
Step-by-step explanation:
The first nondenominational organization composed of coaches and athletes for the promotion of religion was the Fellowship of Christian Athletes (FCA). Founded in 1954, the FCA was created to use the powerful platform of sports to connect with coaches and athletes on the professional, college, high school, and junior high levels, presenting them with the challenge and adventure of receiving Jesus Christ as Savior and Lord, serving Him in their relationships and in the fellowship of the church.