Which of the following is NOT a difference between ancient and modern sports facilities?

Natural grass playing fields are indeed not a distinguishing factor when comparing ancient and modern sports facilities, as both types of facilities have utilized grass as a playing surface. In ancient times, sports such as gladiatorial games or foot races were often held on natural grass or dirt surfaces, similar to how many modern sports still use grass fields today, particularly in sports like soccer and football.

In contrast, amenities for the press, the use of HVAC systems, and modern parking concerns are distinctly modern developments. Today’s sports facilities cater to the media with dedicated press boxes and improved communication technologies, reflecting a significant evolution in how events are covered. HVAC systems provide climate control in indoor arenas, which was nonexistent in ancient venues. Moreover, the need for modern parking infrastructure around sports complexes arises from the increase in spectator attendance and vehicle ownership, which were not considerations in ancient times. Thus, the presence of natural grass is a continuity rather than a difference, validating that it is not a factor that differentiates ancient sports venues from modern ones.