The correct answer is B) the Vietnamese adopted the civil service exam.
Chinese culture impacted Vietnam in that the Vietnamese adopted the civil service exam.
China represented a great influence on the Vietnamese people. China's religious thoughts of Confucianism and politics impacted Vietnam. For instance, the civil service exam. It was an examination that all people that wanted to work for the government had to take. It was a difficult examination because only the best individuals were supposed to be part of the government.
