The correct answer to this question is A, Epidaurus which is the correct spelling.The full name of this theatre is The Ancient Theatre of Epidaurus. As the name suggests, the theatre is in the city of Epidarus in Greece. This theatre is a dedication to Asciepius, which is the Greed God of Medicine.
The history of Epidaurus dates back to 4th century BC, which it was constructed by the architect Polykleitos the Younger. The theatre holds a capacity of up to 14,000 people. Centuries later, it is still attracting visitors near and far, for their performances of plays from the ancient time.
The prosperity brought by the Asklepieion enabled Epidaurus to construct civic monuments too: the huge theatre that delighted Pausanias for its symmetry and beauty, which is used once again for dramatic performances, the ceremonial Hestiatoreion (banqueting hall), baths and a palaestra. The theater was designed by Polykleitos the Younger in the 4th century BC. The original 34 rows were extended in Roman times by another 21 rows. As is usual for Greek theatres (and as opposed to Roman ones), the view on a lush landscape behind the skÍnÍ is an integral part of the theatre itself and is not to be obscured. It seats up to 15,000 people.
The theatre is marveled for its exceptional acoustics, which permit almost perfect intelligibility of unamplified spoken word from the proscenium or skÍnÍ to all 15,000 spectators, regardless of their seating (see Ref., in Greek). Famously, tour guides have their groups scattered in the stands and show them how they can easily hear the sound of a match struck at center-stage. A 2007 study by Nico F. Declercq and Cindy Dekeyser of the Georgia Institute of Technology indicates that the astonishing acoustic properties are either the result of an accident or the product of advanced design: The rows of limestone seats filter out low-frequency sounds, such as the murmur of the crowd, and amplify/reflect high-frequency sounds from the stage.