Final answer:
The sentence should include a comma after the word 'Yes' to properly punctuate the interjection at the start of the sentence. The corrected sentence is 'Yes, Howelsen Hill is the oldest continually running ski area in Colorado.'
Step-by-step explanation:
The corrected sentence with the appropriate comma inserted would be: "Yes, Howelsen Hill is the oldest continually running ski area in Colorado." The sentence should include a comma after the word 'Yes' to properly punctuate the interjection at the start of the sentence.
The corrected sentence is 'Yes, Howelsen Hill is the oldest continually running ski area in Colorado.' The subject that needs to be discussed here is the correct use of commas in a sentence, particularly when it is used to set off a yes or no at the beginning of a sentence.
The sentence should include a comma after the word 'Yes' to properly punctuate the interjection at the start of the sentence. The corrected sentence is 'Yes, Howelsen Hill is the oldest continually running ski area in Colorado.'