Final Answer
The dash in the sentence is used to C. indicate an abrupt change in the sentence.
Step-by-step explanation
In the given sentence, the dash is employed to signal an abrupt change in the sentence structure or content. This punctuation choice serves to create a shift in tone or focus, guiding the reader to expect a change or interruption. In this context, the dash is used to introduce a sudden shift in the speaker's thoughts—from discussing the necessity of team captains to an unexpected observation. This abrupt change enhances the informality and conversational style of the sentence.
The dash, in this case, is not serving the purpose of setting off further detail or explanation (Option A) or showing an abrupt, unfinished end to the sentence (Option B). Instead, it is indicating a swift change in the narrative flow, maintaining a dynamic and engaging tone. The sentence following the dash introduces a new element ("well, will you look at that!"), showcasing the dash's role in creating a sense of immediacy and surprise within the text.
This use of punctuation aligns with the conventions of informal writing, allowing for a more conversational and spontaneous tone. The dash, as a versatile punctuation mark, contributes to the overall readability and expressiveness of the sentence, providing a clear signal to the reader that a shift in the speaker's focus is about to occur.