Which of the following sentences use a semicolon properly?

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I'm planning to go to college at Bridgewater State; because it has a great teaching program and it doesn't cost too much.
It's so rainy today; I just want to curl up with a good book.
My favorite animal is a zebra; we moved to Massachusetts from Florida.
Forks are my favorite utensil; much better than spoons.

My favorite animal is a zebra; we moved to Massachusetts from Florida.