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Correct this run-on sentence: After Ms. Lucas went to the doctor, she went to the pharmacy to get her medicine she found a snack she wanted.
After Ms. Lucas went to the doctor, she went to the pharmacy to get her medicine, and she found a snack she wanted.
After Ms. Lucas went to the doctor, she went to the pharmacy to get her medicine; she found a snack she wanted.
After Ms. Lucas went to the doctor, she went to the pharmacy to get her medicine. She found a snack she wanted.