In which cities does the PGA hold their annual Merchandise Shows?

The correct answer reflects the current practice of the PGA, as they hold their annual Merchandise Shows primarily in Orlando, Florida. Orlando is a significant center for golf and hosts a variety of events related to the sport, making it an ideal location for the Merchandise Show where exhibitors can showcase the latest golf products and innovations. Las Vegas, while a vibrant city with various expos and events, does not host the Merchandise Show; the focus instead is solely on Orlando for this specific context.

The option that includes Los Angeles and Miami, New York and Chicago, or San Diego and Atlanta does not align with the established venues for the PGA Merchandise Shows, showcasing that the key cities associated with this annual event are indeed Orlando and Las Vegas.