The details which support the idea that secrets are a leading cause of the catastrophe are:
B. “Their stolen marriage-day”
D. “For whom, and not for Tybalt, Juliet pin’d”
E. “For it wrought on her / The form of death”
Based on the given question, we can see that there is a narration about the events which happened between the two lovers Romeo and Juliet and how their love came to a tragic end.
Therefore, the correct answers are options B, D and E
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