Final answer:
The island primarily offers an abundance of seafood such as fish and shellfish, as well as edible plants like nuts, fruits, and wild grains, both of which are deeply rooted in the island's traditional dietary habits and available natural resources.
Step-by-step explanation:
The types of food available on an island depend significantly on the local environment and cultural practices. Based on the provided information, one would expect the island to have an abundance of seafood such as fish and shellfish, given the emphasis on fishing and the existence of fishing hooks made from shells. The second type of food likely to be available is a variety of edible plants, like nuts, fruits, and wild grains, as these items were integral to the diets of inhabitants prior to the introduction of grain cultivation and continue to be an important part of traditional diets.
To describe the two types of food available on this island, the main answer would be: seafood and edible plants. The island's economy has traditionally been sustained by fishing, which indicates a rich supply of marine food sources. Moreover, the historical preference for nuts, fruits, and grains is evident in the dietary habits, and the presence of lush forests suggests that these plant-based resources continue to be readily accessible.