The correct response is: Greeks dedicated festivals featuring athletic competitions to Zeus.
Reason: One of the most significant cultural roles of Zeus in ancient Greek society was as the chief deity associated with the Olympic Games, which were held in his honor. The Olympics began in Olympia and included athletic competitions that celebrated physical prowess and were a major part of Greek culture, emphasizing the importance of strength, skill, and competition. Though other aspects of worship included prayers for safety in war or finding love, the connection between Zeus and organized athletic competition is particularly noteworthy in terms of cultural significance.