Concept:Match the vowel sound in the given word with the option that has the same vowel sound.Explanation:The underlined sound in "pure" is the vowel sound /ʊə/. Option A, "sure", is pronounced /ʃʊə(r)/ and also contains the vowel sound /ʊə/. The other options do not share this sound: "you" has /uː/, "curse" has /ɜː/, and "more" has /ɔː/.Answer:A. sure