Why did the festival to the god Dionysus in Athens become another opportunity for civil and political discourse?

Question

a. Most of the tragedies were based upon well-known myths about the gods and the foundation of Athens.
b. The tragedies were propaganda paid for with imperial tribute that explored the hubris of Athenian imperialism.
c. The tragedies strove for elevated models of perfection based on theories of almost mathematical precision.
d. In the hands of the great playwrights, these tragedies probed universal human problems and, under their guise, contemporary Athenian crises.

Answer 1

d. In the hands of the great playwrights, these tragedies probed universal human problems and, under their guise, contemporary Athenian crises.