I think its D because statis and lack are antonyms... impleo and empty are antonyms.. impleo means to fill, or full, and empty means containing nothing.. to make an analogy means a comparison between two things... But, that's just me thinking... Hope this helps!
A thesaurus is a book of words that all have similar meanings. It is a book of words containing synonyms. Instead of saying "said" multiple times, she could look in the thesaurus and find different words with the same meaning.