Which sentence uses commas correctly? When the clown sneezed my little brother, burst out laughing. When the clown sneezed my li
ttle brother burst out, laughing. When the clown sneezed, my little brother burst out laughing. When the clown sneezed my little brother burst out laughing.
Correct answer: When the clown sneezed, my little brother burst out laughing.
Explanation: A comma must be placed after a dependent clause that starts a sentence. "When the clown sneezed" is a dependent clause because it has a subject and verb but it cannot stand on its own. If the dependent clause ends the sentence, it does not need a comma.