Question

name the figurative language. idiom, hyperbole, personification the fire crackled merrily in the fireplace.

Explanation:

The word "merrily" is a human trait (a cheerful manner) applied to the fire, which is a non-human thing. This matches the definition of personification, where human qualities are given to non-human entities. It is not an idiom (a fixed figurative phrase) nor hyperbole (exaggeration).

Answer:

personification