The correct answer is "mainly the interviewee's" since the purpose of interviews is precisely to get to know the person being interviewed, their lives, point of view and opinions. The narrator's point of view can also be present, though not neccessarily, it depends on the narrator. The same applies to the host, it might or might not
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.
