Concept:The underlined letter s in casualty is pronounced as the voiced sound /ʒ/, not as /s/.Explanation:In casualty, the s is pronounced /ʒ/.Check the underlined consonant sounds in the options.lace has an /s/ sound.steal has an /s/ sound.lesson also has an /s/ sound.vision has the /ʒ/ sound.So vision shares the same consonant sound as casualty.Answer:C. vision