Select the sentence that avoids a comma splice.
Option 1: My son graduates from college in a few weeks, he's going into the Navy.
Option 2: He's going to Officer Candidate school, he'll be an Ensign in a few months.
Option 3: It's all very exciting; it's been a dream of his since he was a young boy.
Option 4: Time goes by so quickly, I can't believe he's all grown up.
