Answer:
d.
Step-by-step explanation:
In this scenario, If the plaintiff provides proof only up to the level of "clear and convincing," Casey can still be acquitted. This is because "unambiguous proof" means that the evidence being presented against the defendant is not implied but instead 100% proof without a doubt in what it is stating. Therefore, if this "proof" is only up to the level of "clear and convincing," it means that there is still the possibility of convincing the juror that the opposite is instead true.