Final answer:
The question is asking about inserting a dash in a sentence for pause or interruption in speech.
Step-by-step explanation:
The subject of this question is English. The question is asking about inserting a dash where needed in a sentence. In this case, the dash is used to indicate a pause or interruption in speech. The sentence can be corrected as follows:
“We'll use the town of Killarney as our base,” the Irish tour guide said.
“Then we'll head out to - oh, how about the Dingle Peninsula?”
Learn more about Dash punctuation in English sentences