A pun deals with playing on words.
A pun is a literary device that involves a play on words, usually for humorous effect. It occurs when a word or phrase is used in a way that suggests two or more meanings, or when words that sound similar but have different meanings are used in a humorous way. A pun often relies on word play and cleverness, and can be used to create humor or to emphasize a point. Therefore, the correct answer is option (B) playing on words.