Final answer:
The key principle of classical and neoclassical criminology among the given options is that punishment should be swift, certain, and severe, aimed at deterring criminal behavior by ensuring the consequences outweigh the perceived benefits.
Step-by-step explanation:
The key principle of classical and neoclassical criminology that is reflected among the given options is that punishment should be swift, certain, and severe. This idea stems from the belief that the threat of punishment can act as a deterrent to criminal behavior, thereby preventing crime before it occurs. In essence, classical criminology posits that individuals have free will and engage in criminal acts when they perceive the benefits to outweigh the costs. Therefore, increasing the certainty and severity of punishment should theoretically decrease criminal activity.