Which sentence is punctuated correctly?

Question

1.The red-faced exhausted students are glad that gym is over.
2.Before gym class, the students seem happy, excited, and read to play.
3. After gym class the students appear tired, worn-out, and, thirsty
4. The eager energetic students are ready for gym class to begin.

Answer 1

4. The eager energetic students are ready for gym class to begin.