How were officials chosen for government positions within the tang dynasty?

a. loyal friends were placed in official positions.
b. positions were handed down from father to son.
c. wealthy landowners paid for government posts.
d. civil service exams identify skilled workers.

Plz me in 1756 george washington was sent on a mission to, a. build a fort at the point where the allegheny and monogahela rivers form the ohio river. b. attack the french at fort duquesne. c. attack the french at fort neccessity. d. deliver a message to the french demanding that they leave the ohio valley.