Does jacks desire to kill a pig fit into either of the group's two main priorities established by Ralph and Is jack concerned with the groups welfare?

Answer 1

Here is an overview: The society that the boys are trying to establish is a civilised one, like at home, but surely a civilised society cannot exist if it is populated by uncivilised people. Even a few people that cause trouble, will disrupt the whole group.
Jack's overwhelming desire to kill a pig, which is a cause of conflict within the group, is illustrated on page 63:
'…a quick, hard patter of hoofs, a castanet sound, seductive, maddening - the promise of meat.' It is clear that killing pigs is taking over Jack's entire life, which will cause problems later on. Ralph tells Jack how nobody is helping to build the huts:
"And they keep running off. You remember the meeting? How everyone was going to work hard until the shelters were finished." (page 64) "They're off bathing, or eating, or playing." "When the meeting was over they'd work for five minutes then wander off or go hunting." All this is a clear indication of most of the boys' unwillingness to work to build their society. It is probably not their fault though, back home things were done for them, adults did the work. So again, children just cannot make an adult society, it won't work out, as we are now seeing. A slight conflict occurs between the two leaders, Ralph and Jack, on page 65. Ralph criticises Jack for not successfully hunting a pig. This is a topic of great importance to Jack, and I think that Ralph's criticism will only act to strengthen Jack's desire to kill a pig. It is the first time that they have actually argued, and is the beginning of more conflicts. The beastie features again on page 67. Ralph tells Jack how the boys, especially the littl'uns are becoming afraid of the beastie. This has and will cause problems for the boys and their society. It is the one bad thing on the island, but it spoils all of the good things.
Overall, Jack's desire does not fit into the group's main priorities. Jack isn't concerned about the welfare of the people but mostly on the fact he wants to kill a pig adly.

Answer 2

Jack's desire to kill a pig aligns with the priority of hunting and providing food for the group, which was established by Ralph. Jack becomes more focused on hunting and less concerned with the group's welfare as he becomes increasingly obsessed with the thrill of hunting and power. His priorities shift towards satisfying his own desires rather than working for the common good of the group.