What do the ancient civilizations of china, egypt, and greece have in common with regard to sports?
they all depicted sports on the walls of pyramids.
they all held sporting competitions to honor their gods.
they all organized athletic games that recurred annually.
they all participated in some form of wrestling.

The correct option is "They all participated in some form of wrestling."

• By cataloging certain important sports throughout the history of China, the Dragon Boat event dating back more than two thousand years is known and continues to be a traditional event that takes place every year. On the other hand Cuju, a sport similar to soccer, was practiced in China during the third and second century BC. Since the Song Dynasty, Tai chi chuan and some martial arts similar to qigong became very popular in this country.

• Sports in Ancient Egypt occupied an important part of the leisure of young people of antiquity, being reflected in numerous testimonies: decorations in tombs, vessels, ostraca, etc. Although some activities (especially martial arts) were preferably reserved for the aristocracy, it seems that people of all classes participated in many sports. There was no competition for the importance of the Olympic Games, although competitions were contested (at least in some specific discipline).

• In ancient Greece, the Olympic Games took place every four years and were an important part of the religious life of the Greeks. The Olympic Games were held at the Olympia stadium, which was inaugurated with a sacrifice to Zeus. The six main sports that were played during that period were athletics, pankration, jumping, expedition race, discus throw and javelin.

i'd assume india mainly because of how isolated japan was.   plus it is a whole china away.