Directions: The following item consists of a sentence followed by four words. Select the antonym of the word (occurring in the sentence in capital letters) as per the context.

Tim was sent to the principal’s office by the class teacher after he told a RIBALD joke in the class.

Here, decent is the correct option, as it implies someone conforming with generally accepted standards of respectable or moral behaviour. Vulgar is someone lacking sophistication or good taste, bawdy is humorously indecent talk or writing and polite is having or showing behaviour that is respectful and considerate of other people.