Final answer:
Juliet tells her parents that she is going to confession as an excuse to visit Friar Laurence's cell, which plays a pivotal role in the plot of 'Romeo and Juliet'.
Step-by-step explanation:
Juliet uses the excuse of going to confession for her visit to Friar Laurence's cell. This is a strategic choice because it allows her to leave her home without raising suspicion from her parents. Confession is considered a private matter, so her parents would not expect to accompany her, nor would they question the need for such a visit.
Juliet's visit to Friar Laurence is critical to the plot of Romeo and Juliet, as they concoct a plan to unite her with Romeo despite the obstacles faced from their feuding families.