Which of the following most clearly foreshadows future issues within the group?
"The clamor broke out. Some of the boys wanted to go back to the beach. Some wanted to roll more rocks. The sun was bright and danger had faded with the darkness."
"'Why can't we stay here for a bit?' 'That's right.' 'Let's have a fort.' 'There's no food here,' said Ralph, 'and no shelter. Not much fresh water.'"
"'I'm chief. We've got to make certain. Can't you see the mountain? There's no signal showing. There may be a ship out there. Are you all off your rockers?' Mutinously, the boys fell silent or muttering. Jack led the way down the rock and across the bridge."
"'I say we'll go on!' shouted Ralph furiously. 'We've got to make certain. We'll go now.' 'Let's stay here' 'Back to the shelter' 'I'm tired' 'No!'"
"But Jack was not there. A knot of boys, making a great noise that he had not noticed, were heaving and pushing at a rock. As he turned, the base cracked and the whole mass toppled into the sea so that a thunderous plume of spray leapt half-way up the cliff. 'Stop it! Stop it!'"