In arts, a figurative meaning is a word or phrase that is used to represent something else in a more creative way but keeping the main idea.
Therefore the answer to this question lies in the word "never-ending" in this case as the sea can be seen as never ending,
" Countless choices": here we find countless, a synonym to never-ending. This is Correct
"Predictable selection" and "alarming options": predictable and alarming don't relate to never-ending. These are incorrect
"Llimited supply": limited is the opposite of never-ending. This is incorrect.