Final answer:
Juliet fears that Friar Lawrence might betray her by revealing her secret marriage to Romeo, an act that could lead to dire consequences due to the feud between their families.
Step-by-step explanation:
In Shakespeare’s Romeo and Juliet, Juliet fears Friar Lawrence may betray her due to option (b) - she fears he will reveal her secret marriage to Romeo. This concern stems from the precarious position in which Juliet finds herself, caught between her loyalty to Romeo and the potential for disastrous outcomes if their marriage becomes public knowledge. Friar Lawrence, who facilitated their secret union, is one of the few who knows the truth of their love, and despite being an ally, Juliet grapples with anxiety over the possibility of betrayal.
The tragic climax of the play undoubtedly adds to the tension surrounding each character's loyalty and secrets. With both Romeo and Juliet believing they cannot live without the other and taking extreme measures, Friar Lawrence's role becomes critical in the impact of the play's resolution and its moral lesson regarding the consequences of hate.