I believe the answer is: C. Voting to grant each state three senators instead of two
The constitution stated that each states are represented by 2 senators, regardless of number of population. In order to change this, they need to propose an amendment to the constitution, which must be accepted by more than 3/4 of the states.
a) during the first call she sat with every limb composed, every fold correctly draped, calm as a summer sea, cool as a snowbank, and as silent as the sphinx