Answer:
D!
Explanation:
The rest of them are worded oddly and confusingly - they don't make much sense. D is the one that is most clear, and therefore, concise.
D. The relationship between salvation and afterlife
Footnotes are usually found at the bottom of the page which indicates an additional information or comment about a certain text in the page. In order for Karim to better understand the myth, the footnote provided will help as an explanation of a character or god unfamiliar to him.