Final answer:
None of the provided options (A, B, C, or D) accurately describe an external conflict between Elena and her mother based on the information provided, as they do not align with scenarios involving a direct struggle or disagreement between these two characters.
Step-by-step explanation:
The question asks about the external conflict between Elena and her mother, which indicates a struggle or disagreement between two characters. After examining the provided backgrounds, there isn’t a described situation where Elena and her mother explicitly argue over a curfew which eliminates option A. Similarly, there is no mention of Elena's fear of the dark, making option B incorrect. Option C, which involves a difficult decision at school, does not pertain to an external conflict with her mother.
The narrative does touch upon societal and familial expectations regarding Elena’s life choices, such as marriage and focusing on family, which could be seen as a personal dilemma about her future (option D). However, this does not directly illustrate a conflict between Elena and her mother. Based on the information provided and the understanding of what constitutes external conflict, none of the options accurately describe an external conflict between Elena and her mother according to the scenarios given.