I believe that the answer to the question is B.
Answer: Recess appointment
As the name implies, these are appointments the President makes when the congress is in recess. This is when congress-members go back to their states and districts.
It has helped develop the nation by allowing faster transportation of materials needed to colonize.
Since the electoral college is a college of politicians whose job it is to know everyone and everything, we give them our votes and they vote for who should be the president. Therefore, you don't have to know who the president is, but if you give your vote to the elector then they will give it to who they know is about the ideas that you voted for. Nowadays it is much more complicated due to the scale of it all.
