Answer:
1. Because our cats really like ice cream, they try to reach into our bowls when we have ice cream after dinner.
3. Because we have ice cream after dinner, the cats, who really like ice cream, try to reach into our bowls.
Step-by-step explanation:
A dependent clause is a group of words that has a subject and a verb. It does not convey a complete thought so it is not a sentence and cannot stand alone.
From the original sentences,
"We have ice cream after dinner. Our cats really like ice cream. The cats try to reach into our bowls."
Options 1 and 3 effectively combines the three dependent clauses above and make them have clear meaning.
It explained the cat's likeness for ice cream and how it tries to put its paws inside the ice cream bowl after dinner.