Answer:
A. metaphor
Explanation:
Metaphor: A metaphor is a figure of speech in which to dissimilar things are being compared without the usage of like and/or as.
Idiom: An idiom is a common saying/expression that contains a figurative meaning that is different from the phrase's actual meaning.
Personification: Personification occurs when a non-human thing is given human characteristics.
Simile: A simile is a figure of speech that directly compares two things with the usage of like and/or as.
Given this information, A. metaphor fits "their love is a rose" because love and rose are dissimilar things, and they're being compared without using like or as.
Therefore. the answer is A. metaphor.
