Wich position, appointed by the president, advises the president on matters of national defense?

The Secretary of Defense

Explanation:

In the U.S., the Secretary of Defense is one of the 15 heads of executive departments that are part of the Cabinet which is an advisory body to the president. The main role of the Secretary of Defense, who is appointed by the President with the advice and consent of the Senate, is to oversee the Defense Department and advise the President on matters of national defense.

answer; i believe that the correct answer is (c) ///

the earthquake in haiti was a magnitude of 7.0 according to the u.s geological survey yet the smaller earthquake in haiti killed more than 200,000 and left more than 1.2 million people homeless. the chile earthquake was a magnitude of 8.8 and 500 times more stronger but chile's earthquake only injured 712 people.