Answer:
Of the given options, the following two choices explain how the proximity of China influenced the growth of Korea:
A) Chinese ideas were accepted in Korea, allowing for migration.
D) Metal moveable type from China allowed for communication.
Option B is incorrect because while Korea did create celadon pottery, there is no evidence to suggest that China copied it.
Option C is also incorrect as while there were wars between Korea and the Tang dynasty, they did not result in the unification of the Korean people.
The correct answers are A) Chinese ideas were accepted in Korea, allowing for migration, and D) Metal moveable type from China allowed for communication.