Concept:Personification is the figure of speech in which human qualities or actions are given to non-human things.
Explanation:The parasite is not a human being, yet it is described as doing human things.
It is said to be “sharing his bed” and “making him lost in his sweet dreams.”
These actions are only possible for a person.
So the writer deliberately attaches human behaviour to the parasite.
This clearly matches the definition of personification.
It is neither a metaphor, a simile, nor a hyperbole.
Answer:C. personification