If a decision maker chooses an option that leaves him or her worse off than choosing another available option,he or she is:

A) using bounded rationality.
B) basing the decision on risk aversion.
C) making an irrational decision.
D) making a rational decision.

Choosing an option that leaves the decision maker worse off than choosing another available option is an irrational decision because it goes against the goal of decision making – to choose the option that maximizes the decision maker's overall utility or satisfaction. Choosing such an option may be due to a lack of information, flawed reasoning or biases, which are all examples of irrational decision making.