Final answer:
Lord and Lady Capulet believe Juliet's endless tears are for her cousin Tybalt, when in fact she cries for Romeo.
Step-by-step explanation:
The best supported inference about Lord and Lady Capulet based on Juliet's actions at the end of Act 3, Scene 5 is that Lord and Lady Capulet believe Juliet's endless tears are for her cousin Tybalt, when in fact she cries for Romeo.
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