Which of the following is an example of a pragmatic deficit in RHD?

A pragmatic deficit in individuals with Right Hemisphere Damage (RHD) often manifests as difficulties in the social aspects of communication. This includes challenges in understanding the context of conversations, which can negatively impact skills like turn-taking. Proper turn-taking is essential for effective communication, allowing for smooth exchanges between speakers. When someone has a pragmatic deficit, they may interrupt frequently, fail to recognize cues that signal when it's their turn to speak, or struggle to maintain the flow of conversation.

In contrast, the other options provided relate more to language functions. Lack of vocabulary pertains to lexical retrieval, which is more of a semantic issue. Inability to create sentences is related to syntactic skills, and slow speech rate might be a motor speech issue or linked to expressive language difficulties but does not specifically indicate an understanding or use of social language cues. Thus, poor turn-taking serves as a clear indicator of pragmatic deficits often seen in RHD.