Final answer:
The sentence 'I got out of bed as the sun peeked its head over the horizon' employs personification by attributing the human action of 'peeking its head' to the sun, making the scene more vivid and relatable.
Step-by-step explanation:
The correct figurative language for the sentence 'I got out of bed as the sun peeked its head over the horizon' is personification. Personification is a form of figurative language where non-human objects are given human characteristics. In this case, the sun is given the human action of 'peeking its head,' which is something a person might do. This usage of personification makes the imagery of sunrise more vivid and relatable, as it gives the celestial body an action associated with curiosity or the start of a new day.