Which best explains how the structure of the office of the president fulfill the office’s role?
a) the office is led by the chief of staff, who serves as a key adviser to the president.
b) the office has multiple levels of staff and advisers who the president in many areas.
c) the office is led by the vice president, who serves as a key adviser to the president.
d) the office has a single level of staff and advisers who the president in many areas.

1. discovered the new world balboa 2. explored the north american southwest hudson 3. his crew was the first to sail around the world vespucci 4. conquered the incas of peru cortes 5. discovered the pacific ocean columbus 6. conquered the aztecs of mexico cabot 7. discovered fishing grounds off newfoundland pizarro 8. looted spanish vessels for england drake 9. claimed the hudson river area for dutch coronado 10. priest who explored the mississippi marquette 11. man for whom the new world is named magellan