Concept:The target sound is the voiced affricate /dʒ/, which occurs when you pronounce the final consonant in badge.Explanation:Listen carefully to each option and check whether the sound /dʒ/ appears.First, costume is pronounced /’kastju:m/, with no /dz/ sound anywhere.Next, counsel is pronounced /ˈkaʊnsəl/, and it also has no /dʒ/ sound.Now examine badge; it is pronounced /bædʒ/.The spelling “dge” at the end of badge represents exactly the sound /dʒ/.Finally, aura is pronounced /ˈɔːrə/, which contains no /dʒ/ sound.Hence, among all the options, only badge contains the given phonetic sound.Answer:C. badge