I do not think there are any similes or metaphors here.
Social media is a centripetal force and it connects people with the internet’s broad web. It pulls people into groups and depends on each of their likings.
I think the third one is probably the answer (?)
Answer:
Major Themes in “Double, Double Toil and Trouble”: Magic and evil are the major themes of the poem. The witches prepare a cauldron by adding animal bodies, foreshadowing the imminent evil. In fact, the whole text revolves around their wickedness and prophecies.
i hope this helps. have a great day