What is one of the pragmatic functions that expands during the later linguistic stage?

The correct choice highlights that the use of joking and politeness increases as children advance during the later linguistic stage. As children's language skills develop, they not only gain a better understanding of vocabulary and grammar but also enhance their ability to navigate social interactions. At this stage, they start experimenting with humor, which includes joking and playful language. This reflects their growing awareness of social norms and the subtleties of communication that are vital for building relationships. Additionally, they become more adept at using language to express nuance in social situations, including understanding and employing politeness strategies to maintain harmony in conversations. This shift represents a significant maturation in pragmatic language skills, indicating their ability to engage in more complex social exchanges.