Answer:
Metáfora
Step-by-step explanation:
Simil makes connections of things, it is more evident and metáfora is less evident; the subject you want to talk about is represented in a different reality, with similarities.
Not personificación beacuse it uses an unanimated thing represented in a person, an animated subject, generally feelings, or an abstract or inmaterial things.
P.S. I'm a spanish native speaker