Final answer:
In 'Lord of The Flies', the boys' primary fears include fear of each other, the imagined beast, and not being rescued, each contributing to the novel's themes of savagery and loss of innocence.
Step-by-step explanation:
In the novel Lord of The Flies by William Golding, the primary fear of the boys on the island encompasses several aspects, which include fear of each other, fear of the imagined beast, and the fear of not being rescued. These fears are central to the theme of the novel, which explores the descent into savagery and the loss of innocence among the boys.
As the boys become more disconnected from the norms of society, their intrinsic fears manifest into tangible threats, altering their behavior and decision-making. Consequently, this escalates to the point where the boundaries between imagined and real fears blur, leading to chaos and violence.