Who was the PGA Tour's first commissioner, serving from 1969 to 1974? The answer is Joe Dey.
Joe Dey, formally Joseph Charles Dey Jr., became the PGA Tour's first commissioner in January 1969. He took the job after serving for decades as an executive of the United States Golf Association, including a long tenure as its executive director.
Dey's appointment followed the touring professionals' separation from the PGA of America and the creation of a more independent tour structure. During his administration, the circuit was often called the Tournament Players Division of the PGA. He helped establish the administrative foundation on which the modern PGA Tour was built.
Dey served for roughly five years and was succeeded in 1974 by Deane Beman, a former tour player who became the second commissioner. That succession is a useful way to distinguish the names in the answer choices: Tim Finchem and Jay Monahan led the tour much later, while Beman followed Dey rather than preceding him. Dey also helped originate The Players Championship, first staged in 1974.