Final answer:
The answer to the four positions on the possibility of failure scale is (a) Uncertainty. These terms are crucial in decision making, with each level indicating a different degree of predictability concerning outcomes.
Step-by-step explanation:
The four positions on the possibility of failure scale include certainty, risk, ambiguity, and uncertainty. Therefore, the correct answer to the question is (a) Uncertainty. In the context of decision making and business, these four terms represent different levels of knowledge about the outcomes of decisions or events.
Certainty implies that the outcome of a decision or event is known. Risk means that the outcomes are unknown but the probabilities of various outcomes can be estimated. Ambiguity refers to situations where even the probabilities of outcomes are not well defined. Lastly, uncertainty is used to denote situations where the likelihood of outcomes is completely unknown, making it difficult to predict or plan for various scenarios.