Answer:
Correct answer is D. South Africa . . . Great Britain.
Explanation:
Great Britain is a cradle of this sport. It started developing in the 19th Century. From here it spread across the globe, including the colonies that were in hands of Great Britain.
That is why D is the correct answer.
All other answers are wrong because this countries had no colonial connection, and it was impossible to establish this type of links.
It is interesting that South Africa is one of the greatest rugby forces.
