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Answer:
Hi!
The answer you are looking is <em>to foreshadow the tragedy. </em>
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Explanation:
The purpose of this dialogue is to foreshadow the tragedy that happens in Romeo and Juliet. By introducing the sword and having the characters talking about it, the writer introduces suspense and leaves people wondeing if that sword will cause damage.
Cats make good house pets. It's the main idea in the sentence, and it's independent also. The other clause is dependent, so it is not the main clause.
