Final answer:
In the context of law, relief of liability occurs when an investigation fails to prove negligence. Absence of evidence or proof is used to determine the criteria for relief of liability.
Step-by-step explanation:
In the context of law, the criteria for relief of liability when an investigation didn't prove negligence is referred to as the absence of evidence or proof. In this case, if an investigation fails to establish that negligence occurred, it means there is a lack of evidence to support the claim of wrongdoing.
Without sufficient evidence, it is difficult to hold someone legally responsible for the incident. For example, in a court trial, if the evidence presented does not prove that an individual acted negligently and caused harm, the court may grant relief of liability.
It is important to note that the absence of evidence or proof should not be used as a basis for concluding that a particular cause is responsible for a certain phenomenon. One should withhold accepting any conclusion about the cause until there is sufficient evidence to support it.