Rena’s boss just informed her that the next election would be won by the incumbent. She proceeded to ask him where he got his information and did he know if the data was based on a random sampling of potential voters. Rena is exhibiting

Critical thinking    

Explanation:

Critical thinking: In psychology, the term "critical thinking" is defined as a process through which a person tries to make a different judgment on the basis of reasoning that are either well-thought-out or logical or rational. An individual who thinks critically don't just accept what is being presented in front of him or her rather he or she looks for all possible alternatives and question what so ever he or she wants to about the given arguments or conclusions.

In the question above, Rena is exhibiting critical thinking.