B thesaurus since it shows similar words that will lead you to the meaning
Percival was protecting the ladies of Castle Weeds from the eight witches.
I would say 4, it seems a lot clearer than the other answers to me.
Shakespeare builds tension in the play by having the witches mysteriously appear and dissapear. Through dramatic irony he is giving the audience more information about the witches then the characters. They are thinking whether to trust the witches or not, but we already know that they shouldn’t.