Which of the following key deontological concepts refers to the idea that criminal punishment should “fit the crime”?

None.

Since you list no choices, I have no idea which deontological concepts your class wants you to know about.

The key deontological concept that refers to the idea that criminal punishment should "fit the crime" is known as retribution. To understand this concept, let's break it down.

Deontological ethics is a moral framework that emphasizes duties, rules, and principles. It places importance on the inherent nature of an act, rather than its consequences. In the context of criminal punishment, deontological ethics suggests that punishment should be administered based on the moral culpability of the offender, rather than the potential consequences or the overall social utility.

Retribution is a central principle of deontological ethics in relation to criminal punishment. It is the idea that individuals who commit crimes deserve to be punished as a direct response to their wrongdoing. The principle of retribution asserts that the punishment should be proportionate to the severity of the crime committed. This concept is often summarized as "an eye for an eye."

To determine which of the key deontological concepts refers to the idea that criminal punishment should "fit the crime," we need to analyze the options provided. Since the concept of retribution aligns with the notion of proportional punishment, it is the appropriate answer to the question.