A well written plot should always grab a reader's attention and keep them interested in the text. This could be done by asking a question, using active verbs, or even just by using engaging words.
(If this is supposed to be multiple choice, post options and i will answer)
Among her suitors, Portia's description of t<span>he Duke of Saxony's nephew </span>compares to a sponge.
I am not familiar with this story. Metaphors are comparisons without using the words “like or as”. Such as, “She is prettier than a sunflower”.
Unfortunately I don't know what poem you're talking about but I can provide some insight on the word luminous! Luminous is typically applied to people or characters to express a bright and happy personality. So without reading the poem I can tell you the author most likely means the turtle is an optimistic, joyful guy!