Which sentence describes a responsibility of the Vice President of the United Sates? 1. The Vice President serves as Commander-in-chief if the current president has no military experience.
2. The Vice President becomes “acting president” when the current president goes on vacation.
3. The Vice President becomes “acting president” during the campaign in the President runs for re-election.
4. The Vice President becomes President if the current President dies or resigns from office.

What is the main difference between primary and secondary sources? a. primary sources are historical documents, and secondary sources are modern-day documents. b. primary sources are derived from museums and archives, and secondary sources are created by history students and academics. c. primary sources are found in ancient places with a rich history, and secondary sources are found in historical journals and blogs. d. primary sources are created during a particular historical era, and secondary sources are created by studying primary sources.