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If it had to be the same answer the beginning because you don't introduce characters in the middle or end!!!
If it can be different then conflict would be middle and characters would be begging because a conflict is most likely to be in the middle: the most action packed part of the book.
The best and most correct answer among the choices provided by the question is the fourth choice. The foreshadowing help readers stay engaged in a story by expanding <span> on the incident that creates the central conflict.</span>I hope my answer has come to your help. God bless and have a nice day ahead!