Nervousness flows through our veins, This day has been dreaded since the news came
It depends on which words are bolded.
If the words in bold are <em>to work, </em>then this is an C. infinitive.
The franks are a loving family, who work hard to keep everyone happy. The Van Daans continuously yell and blame things on their own kid. Peter and Mr. Van Daan, don't have the best relationship, but especially when peter falls from the chair, he yells at his son harshly.