• Attorney General
• Secretary of Agriculture
• Secretary of Commerce
• Secretary of Defense
• Secretary of Education
• Secretary of Energy
• Secretary of Health and Human Services
• Secretary of Homeland Security
• Secretary of Housing and Urban Development
• Secretary of the Interior
• Secretary of Labor
• Secretary of State
• Secretary of Transportation
• Secretary of the Treasury
• Secretary of Veterans Affairs
• Vice President (of the United States)

Any of these is a correct answer at the interview. The red answer above is the simplest one to memorize.