An Abstract from a Recent Economics Paper Reads as Follows

An abstract from a recent economics paper reads as follows:
We explore whether presidential and congressional influences affect the rate of disaster declaration and the allocation of FEMA (Federal Emergency Management Agency) disaster expenditures across states. We find that states politically important to the president have a higher rate of disaster declaration by the president (which is necessary to receive FEMA funding) .
This research is an example of

A) political economics.
B) civil reasoning.
C) public choice.
D) myopic rationality.