Think about it...
Why would Lice have a worm on his face?
Sometimes, even if we don't remember or understand what we've read, we can use common sense to identify which answers don't make any sense.
When Noah goes to see Lice Peeking, he describes him as have a 'wormy smile.' What do you think he means by that?
That there's a worm on Lice's face
That Noah thinks Lice is incredibly ugly
That Lice isn't actually happy to see him, and that the smile is forced