Answer:
Option: by passing an exam
Explanation:
The Song dynasty was an imperial dynasty of China that ruled from 960 to 1279. During this period, attention given to the civil service exams. The officers selected by competitive written examination so, capable individuals would get a chance to govern. The civil service exams were open to more candidates, including people from different classes like middle and lower. The exams gave men literary educations to work in the government.
