Answer:
2. Cinderella would continue to live a miserable life.
Explanation:
If the Prince wasn't motivated by anything, not even wanting to find his true love, he doesn't find the owner of the glass slipper, therefore not finding Cinderella and marrying her. That also means Cinderella continues living the same life doing chores for her stepsisters and stepmother.
Good modifies phone and is a predicate adjective, so a.
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Complete subject: the longest most boring day of his life
complete predicate: ended with a thud