I would say that the best way to say it is that it is most concerned with the human: human rationality and search for pleasure and fulfillment, the way humans experience and find earthy pleasures and with the human psyche.
Answer:
Because it introduces the reader to a secondary story that is totally relevant to the original story. Without this device, we would lose precious details of the story that the main narrator was unaware of.
Explanation:
Frame device is a narrative technique that refers to the process of inserting, within an initial story, another story. Generally, the objective is to present an introductory story as a way to emphasize a second narrative or a set of short stories. The framed narrative takes readers from one first story to another, smaller (or several) within it.
The importance of this device is that it introduces the reader to a secondary story that is entirely relevant to the original story. Without this device, we would lose precious details of the story that the main narrator was unaware of.
I think it is D
Hope this help you