what changes need to be made in sentence 2 A Change the period to a question mark B delete Until C insert a comma after family D no changes need to be made

you need to insert a comma after family. C

Explanation:

you need to do this do make it grammatically correct.

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.