How were government workers chosen in the Ming Dynasty? A. based on their wealth and status
B. based on their family background
C. based on the results of civil service exams
D. based on their knowledge of art music and literature.

Edge 2020

I will give brainliest but idk how

Ahistorian has discovered a letter written by an early roman emperor. she translates the letter and discovers that it contains orders to a general before a battle. she works to determine when the letter was written to figure out which battle the letter references.the historian in the passage is most clearly demonstrating which historical thinking skill? a. identifying causes and historical contextb. thinking chronologicallyc. making and evaluating arguments and interpretationsd. analyzing historical sources