The main way in which John Marshall's interpretation of the constitution was different from Thomas Jefferson's is that Marshall believed that the Constitution could be interpreted fairly widely, while Jefferson was an "originalist".
Andrew Carnegie was an American industrialist who amassed a fortune in the steel industry then became a major philanthropist. Carnegie worked in a Pittsburgh cotton factory as a boy before rising to the position of division superintendent of the Pennsylvania Railroad in 1859.
The National Reclamation Act funded irrigation projects in West America. So, as you can imagine - the most likely answer here is B! =)
