How many professionals did the PGA grow to from its initial membership?

The correct answer indicates that the PGA grew to approximately 28,000 professionals from its initial membership. This growth reflects the expansion of the organization and the increase in popularity of golf as a sport, which led to an influx of individuals pursuing careers in various aspects of the game, including teaching, coaching, and running golf facilities.

The initial membership of the PGA was small, and over the decades, as the game evolved and became more accessible to a wider audience, the professional community also expanded significantly. The figure of 28,000 professionals marks a substantial development in the PGA’s outreach and influence within the golf industry. This growth not only illustrates the rising number of individuals involved in the sport but also represents the PGA's role in promoting and advancing golf as a career.

Other answer choices reflect figures that do not accurately represent the growth trajectory of the PGA. The membership figures mentioned either fall short of or exceed the actual number documented in the historical growth of the organization, showing the importance of understanding the PGA's development over time.