He sees sharks swimming very close to the shoreline, he knows there are moray eels living in the crevices, and the birds have their nesting grounds on the beach nearby.
German submarines may detect they are on the island has nothing to do with swimming or water.
The correct answer here is the exposition.
Narrative consists of several stages and parts like the exposition, climax, falling action and resolution just to name the few. Exposition in particular refers to the putting in, that is inserting, important background information. It is also called incluing and it is an important for worldbuilding.
<span>A. Strategies for understanding a new word include using a dictionary, studying affixes, and using context clues.
</span>