What was the focus of the civil service examinations for the state bureaucracy under the Tang?

The officials selected by writing exams as it gave a chance to candidates for governing the state under the bureaucracy.

Explanation:

The civil service examinations allowed the state to find the best candidates to serve the bureaucracy under the Tang that governed China in 618 CE. Empress Wu Zetian of the Tang Dynasty regularly depended on the imperial examinations for selecting officials. The civil service exam was a practice of examining male candidates who yearned to enter the Imperial Court to serve the bureaucracy.  

c or d both can be the answer

when world war i broke out across europe in 1914, president woodrow wilson proclaimed the united states would remain neutral, and many americans supported this policy of nonintervention. however, public opinion about neutrality started to change after the sinking of the british ocean liner lusitania by a german u-boat in 1915; almost 2,000 people perished, including 128 americans. along with news of the zimmerman telegram threatening an alliance between germany and mexico, wilson asked congress for a declaration of war against germany. the u.s. officially entered the conflict on april 6, 1917.