Because of the silence between them
The man was a wildfire.
All of the other examples either have like or as in them so choose the one without
Hope I helped :)
I personally would say c) irony.
Why?
Alliteration is like the sally seashells kids song.
Metaphor is saying " he is a rock" when "he" is not actually a rock
Hyperbole is something exaggerated or a claim.
That makes me believe it is irony. Hope this helps.
