What was the estimated number of spectators attending the Ancient Olympics each day?

The estimated number of spectators attending the Ancient Olympics each day was around 40,000. This estimation reflects the significant interest in the games during ancient times, when spectators traveled from various city-states to witness the athletic performances.

The games were held in Olympia, a location that was central to the cultural and sporting life of the Greek world. Given the historical context, this number indicates a large gathering of people, which underscores the importance of the Olympics not only as a sporting event but also as a social and religious occasion that attracted participants and fans alike. The scale of the event contributed to its reputation and lasting legacy in both ancient and modern times.

The other options suggest either significantly lower or higher attendance figures, which don't align with the historical data available from ancient texts and archaeological findings. Thus, the choice of 40,000 spectators is supported by historical evidence and reflects a realistic turnout for such a grand athletic competition.