Simile: <span>involving the comparison of one thing with another thing.
Example: He/She is as brave as a lion
<span>Methaphor:</span> </span><span>refers to something as being the same as another thing for rhetorical effect. </span><span> Example: </span><span>The classroom was a zoo. </span>
Between the last 2 options:
Remember that alliteration is: <span>a stylistic literary device identified by the repeated sound of the first consonant in a series of multiple words, or the repetition of the same sounds or of the same kinds of sounds at the beginning of words or in stressed syllables of a phrase.
Example: </span><span>But a better butter makes a batter better. </span> <span>This is an alliterative because the same first letter of words (B) occurs close together and produces alliteration in the sentence. </span> While... Repetition is: Repetition is a literary device that repeats the same words or phrases a few times to make an idea clearer.
Example: I looked upon the rotting sea, And drew my eyes away; I looked upon the rotting deck, <span>And there the dead men lay.</span>
So between both the one that makes more sense is Alliteration.