Final answer:
Ancient Greek theaters could hold between 10,000 and 20,000 people, allowing almost an entire town to witness a play. The large stone theaters were strategically built to optimize acoustics and visibility.
Step-by-step explanation:
The seating capacity of ancient Greek theaters varied considerably, but large amphitheaters could accommodate between 10,000 to 20,000 spectators. The acoustics in these theaters were so well-designed that they allowed every member of the audience to hear the performances clearly. Masks with exaggerated expressions were used by actors to convey emotions to the distant audience. These practices ensured that Greek theater was both a form of entertainment and a significant part of the cultural and religious life in ancient Greece.
Theaters such as the Theatre of Dionysus were constructed into hillsides, utilizing natural acoustics. With the inclusion of stone seating arranged in a semi-circle, everyone in attendance could view and hear the stage action. Despite the ruins that remain today, they testify to the engineering prowess of the Greeks in theater construction, which was integral to their community and social gatherings.
Overall, if we consider the larger amphitheaters which could hold up to 20,000 people, none of the options provided (1,000-3,000; 3,000-5,000; 5,000-7,000; 7,000-9,000) accurately reflect the higher capacities of these structures.