If those who get arrested are less likely to repeat the offense, compared to those who got a warning, arrest is said to produce a Higher Marginal deterrent effect.
Marginal deterrence refers to the idea that there should be severe punishments for severe crimes. On the other hand, crimes that are not as severe, should receive lesser punishment.
This restricts the criminals from committing more severe crimes.
In the given case, the police arrested some of the brawlers to establish a fear of punishment among them. The ones who were not arrested were given a warning.
The arrested ones are less likely to repeat the mistake than those who were left with a mere warning.
This therefore created a marginal deterrence effect among the criminals.
Therefore, the correct option is A.
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