<span>B. she trusts Madame Loisel is your best answer.
Most likely, since they were friends with a long relationship, you can infer that she trusts Madame Loisel because of her giving the necklace without hesitation.
Metaphors and similes are used to add depth and meaning to the poem, so it looks normal on the surface but when you re-read it you uncover a deeper meaning :)
