Paul loved to party at mardi gras, even if he was not involved in making a float or anything else. the atmosphere on the street was just so different, so easy. he had a great time. at such a(n) the rules were loosened.
a. culture-free event
b. police-free event
c. free-for-all
d. moral holiday

Moral holiday

Explanation: Mardi gras also referred to as fat Tuesday is an example of moral holiday. It is celebrated on 5th of march every year.

Moral holidays are those holidays which are made for boosting up the morale of the population. In such holidays, the authorities allows the individuals to break certain rules and norms without making any sanctions.

   From the above we can conclude that the right answer is option D.

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