What were the two creatures that frightened Ned on the island of Pavavu?

Ned's fear of rats and crabs on the island of Pavavu can be understood through the context of his setting and experiences. Crabs, particularly in tropical environments, can be quite intimidating given their size, quick movements, and sharp pincers, which might evoke a natural fear. Additionally, rats are often associated with disease and can create a sense of unease due to their unpredictable behavior and presence in deserted or wild environments. Together, these creatures represent a mix of physical danger and the discomfort often felt in unfamiliar situations, especially in a survival scenario.

The other combinations do not encapsulate the specific fears Ned experienced. While snakes and lizards can be frightening, they were not the primary creatures mentioned in Ned's story. Similarly, bats and rats, or birds and insects, may evoke mild trepidation but do not align with the particular fears noted in Ned's narrative. Ultimately, focusing on the direct mention of rats and crabs highlights their significant role in shaping Ned's emotional state during his time on the island.