The sentence which best shows correct comma usage is " What would you like, Ken, for breakfast?" Option B is correct.
When we use vocatives in sentences, that is, names that are being addressed direcly, they must be separated with a comma or commas from the rest of the sentence.
In this particular case, the word Ken is between commas to be separated from the rest of the sentence. However, since vocatives tend to be at the beginning or end of a sentence, it should be semarated only by one comma.
Answer: Refine his research question and look for more focused resources.
Explanation: As per the question, the most beneficial succeeding step in the writing process for Dominic would include 'refining his research question and look for more focused resources'. 'Refining the research question' would assist in directing the research more specifically and qualitatively while 'looking for more focused resources' would help in presenting the more authentic claims and relevant evidence that would support and substantiate his claims and establish the credibility of his paper.
