True. <span>Vortigern invited the Anglo-Saxons to England</span>
The answer is C: a topic of the particular work.
The subject in any literature text is the main topic that the text elaborates throughout its pages. It can be an abstract idea or a concept, like love or justice, and it works as the foundation for the events that mold the characters in the story. It should not be confused with the theme of a story, this latter one is based on the subject, but it reflects the author´s conception or interpretation of the subject. For example, if “love” is the subject of a novel, “love conquers all” would be a possible theme for that novel.
Based on this line from "My Father's Sadness", the line <span> “his young body is dying of responsibility" means that, the speaker is aware that she understands that her father is dying, and that the burden or responsibilities of life is slowly taking away his young body, having a slow and painful death. Hope this answer helps.</span>