When trying to convey the thoughts and feelings of immigrant laborers in the early 20th century, it would be best to read a narrative type of passage, due to the story.
Past; passed is the verb form; pass is also a verb form and a noun
It would be my pleasure to help you out on this answer. Would it be alright if you would take a photo of the text your are going to right about?
The answer would be C. In medias re literally means "in the middle of things" in Latin :-)