What happens to Ralph when they go Castle Rock to confront Jack?

He beats Jack in a fight and takes control of Jack’s tribe.
He dives off the cliff to rescue Piggy.
He is forced to join Jack’s tribe.
He runs into the forest to escape Jack’s tribe.

None of the options are correct. When they go to Castle Rock to confront Jack, Ralph is nearly killed by Jack's tribe. They attack him with spears and try to hunt him down. He narrowly escapes and hides in the forest until he is finally rescued by a passing naval officer.

When Ralph goes to Castle Rock to confront Jack, he is forced to join Jack's tribe.