Which of the following statements describes the theory of bolstering?

a. Policy makers will seek to reach a solution before all the available data have been assessed, due to the stressful nature of decision-making.
b. Policy makers tend to exaggerate the extent to which their interests converge with those of their allies and the depth of hostility adversaries have to those same interests.
c. Once a decision is made, policy makers later use that decision to lend additional support to their original argument.
d. Decision-makers often search for familiar precedents in history that allow them to match new pieces of information against their stored memories.

c. Once a decision is made, policy makers later use that decision to lend additional support to their original argument.