Hello!!
i would say that the answer would be mysterious because the trailer is asking its audience many questions about how cinderella’s story will turn out.
examples:
“is there a way to escape the drudgery?”
“can cinderella find a way?”
all of these questions leave the audience wondering what will happen next
i hope this helped, good luck!
A series of events develop the plot's central conflict and Suspense builds gradually as the plot progresses.
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