The president, US Consitution. The goverment have power, but it tends to corrupt them. It's in Washingtion D.C. Legislative create the laws, as the executive branch carries out the laws
"Isn't" is the best option from the list in terms of completing these sentence. This is primarily because "isn't" is a contraction of the two words "is" and "not.
Pride, macbeths pride is eventually what led to his downfall.
"A. to face his enemy alone" is the best option from the list regarding the theme of the conflict, but it should be noted that there are other major themes as well.