Concept:The word that contains the vowel sound shown by the phonetic symbol must be identified from the options.Explanation:The word "about" is pronounced /əˈbaʊt/.This pronunciation contains the required sound represented by the given phonetic symbol.None of the other options have this sound."age" is pronounced /eɪdʒ/, "argue" is /ˈɑːɡjuː/, and "active" is /ˈæktɪv/.Therefore, only "about" matches the phonetic symbol.Answer:C. about