This one is hard to say... but in my personal experience, I'd say it's most likely D.
The answer is A. tendency to make decisions with insufficient data.
A rational decision maker takes action if and only if the marginal benefit of the action exceeds the marginal cost.
<u>Explanation:</u>
Rational people always think at the margin. Decision makers generally consider both the explicit and implicit costs of their actions.
The decision-making is the process of making choices in the optimal level of benefit or utility for an individual. Rational decision making is a multi-step process that makes choices between the alternatives.
A rational decision maker takes action if and only if the marginal benefit of the action exceeds the marginal cost.