Question

Which of the following sentences is punctuated correctly?

Bobby, who hates being undersized, saves Greg from a meat locker in an episode
of the Brady Bunch.

Bobby who hates being undersized saves Greg from a meat locker in an episode
of the Brady Bunch.

Answer 1

The first one is correct. The second one is a run-on sentence, like speaking without pausing at a comma to take a breath.