Concept:The symbol /tʃ/ represents the "ch" sound heard in church or watch.Explanation:Option A: shock is pronounced /ʃɒk/. It contains /ʃ/, not /tʃ/.Option B: botched is pronounced /bɒtʃt/. It clearly contains the /tʃ/ sound.Option C: machine is pronounced /məˈʃiːn/. It contains /ʃ/, not /tʃ/.Option D: chagrin is pronounced /ˈʃæɡrɪn/. It contains /ʃ/, not /tʃ/.Therefore, the word that contains the sound /tʃ/ is botched.Answer:B. botched