In Lord of the Flies, what does Ralph consider their primary objective?
Ralph's objective is to get the signal going so any passing ship will see them and come rescue them. In order to keep that signal going, however, the boys must work together to keep the fire lit. This means they must work as a democracy. They also have to have someone gathering necessary fuel for the fire as well as having someone/several boys keep watch over the fire so it doesn't ever go out. It takes team work to get these tasks accomplished. They must keep that signal going in order to be saved. That is Ralph's primary objective.
Ralph is mostly concerned with getting rescued. As such, his main objective and concern is with keeping a large fire burning at a high point on the island, so that naval vessels can see them from a distance and come to their aid. His father worked in the Navy, and Ralph knew from this that getting noticed by a Navy ship would entail a large signal of some sort, and fire seemed the best way to do it. During the day, smoke would be seen for miles, as would fire during the evening hours.