After Jack and Ralph see the "beast," they call an assembly. Jack thinks the hunters should protect the group from the beast, and Simon suggests they climb the mountain to investigate further.
The hunters then go about killing a pig and leaving the head on a stick as an offering to the beast so it won't harm them.
Those four things (calling an assembly to talk about options, hunting the beast, climbing to investigate, and leaving an offering for the beast) are all possible choices to handle the beast.
Other things they could do are: leave it alone, hide, or try to befriend it I guess. However, since the beast is not a live entity, the possibilities to the question are endless.