The contribution of classical Greece that is most relevant to modern Western civilization from the options you provided is the physician's pledge to care for patients. This relates to the Hippocratic Oath, which has its roots in ancient Greek medicine and is still influential in modern medical ethics.
The other options, while significant in their own contexts, do not have the same direct link to classical Greek contributions as the Hippocratic Oath does. For example:
- Operatic style of music is more closely associated with developments in Italy during the Renaissance rather than classical Greece.
- Theory of aerodynamics has roots in various scientific discussions, but significant contributions came later through figures like Leonardo da Vinci and the Wright brothers.
- Equal rights for women was not a concept broadly accepted or practiced in classical Greece; in fact, women had very limited rights in most city-states.
Thus, the most accurate answer is the physician's pledge to care for patients.