Final answer:
The criterion that is not one for evaluating the effectiveness of a control is that it must be cost-effective.
Step-by-step explanation:
C. Must be cost-effective
Of the options provided, the criterion that is not one for evaluating the effectiveness of a control is that it must be cost-effective. While it is important for controls to mitigate or eliminate risk, meet safety requirements, and be easy to maintain, cost-effectiveness is not explicitly referenced as a criterion. However, it is worth noting that cost-effectiveness is often considered in evaluating the overall effectiveness of controls.