The first choice is correct, because the other two don't make sense. An action verb connects phrases into sentences, and your paragraphs should relate to each other!
Answer:
Jackson looked apologetically at Connor who rolled his eyes, and said, Yes Sarah, he knew.
Explanation:
I think the correct answer from the choices listed above is option C. The best revision that removes the informal language from the passage would be to change only sentence 2 to "This class has given me the opportunity to build skills such as answering phones professionally and using spreadsheets and databases."