Which words in the sentence makes up the appositive phrase? which word does it rename?
the reference book, the one about earth and it rock, is missing from the shelf.
a. and it rock,: renames earth
b. the one about earth and its rocks/renames book
c. from the shelf / renames missing
d. reference book/ renames one

the correct answer is d. a discussion of specific uses of alliteration

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when you are critiquing or evaluating a poem, you will mostly pay attention to the theme, as well as figures of speech and rhythm. alliteration is a figure of speech where consonants are repeated in neighboring words - and it is important for analysis of sound and rhythm, which is why it might appear in the evaluation of that poem.