Which figure of speech is used to create mental images by madirect comparisons between two subjects

Metaphor.

personification is giving human characteristics to inanimate objects.

onomatopoeia is a written sound.

an alliteration is a sequence of words with the same first letter. ex. sally sold seashells by the seashore.

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the reason some people sacrifice their own life for another person's life could be that they are in love with them and would do anything to keep them safe a protected even if that means risking their life in the process