I think its the third one. Hope I'm right, and hope I helped you.
I would say the main headings and key concepts in a reading assignment would help one to grasp what the topic is basically about ie paying attention to these two things would be an essential part of a study guide so that the main meaning of the writing could be grasped.
Answer:
a.point of view is a narration style
Explanation:
Narration is what the author is telling, and point of view is how is he telling you something, it basically means that point of view is a narration style, it could be in first person, second person, third person, or omnipresent narrator, the narration is what is being told and point of view is through the eyes of whom are you seeing the story unfold.