Answer :
The correct answer is A.
The most important contribution of the Greeks to history was the creation of the Olympic Games which date back to 776 BC and its name is due to the place of its celebration: the Greek village of Olympia, the most important sanctuary of the god Zeus located in the Valley of the Alfeo. These games were held every four years between the months of July and August.
The Olympic Games did not emerge as a sports, aesthetic or philosophical concern. Rather, it responded to a time of political and economic crisis in a Greek world under construction.