Answer:
a. Serbia and service
Explanation:
Guide words are terms usually found on the top of a document arranged alphabetically (example, dictionary), so as to indicate the first and last words on the page. From the alphabetical arrangement of the word "serpent", it is most likely that "Serbia" will come before "Serpent", while "Service" will be found after "Serpent".
B comes before P, and P comes before V. So, "Serbia" will be found at the top of the page. "Serpent" will be found at the middle while "Service" comes last.
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The correct answer should be “it is not always stated overtly and is understood only by reading the whole poem”.
this is correct because the theme usually does not change itself, but there can be multiple themes analyzed. it is rarely stated overly and requires some analysis and understanding so as to find it.