Concept:The given sound is the voiced consonant /b/, so choose the word where the letter "b" is actually pronounced.Explanation:In bugle, the "b" is pronounced as /b/: /ˈbjuːɡəl/.In doubt, the "b" is silent: /daʊt/.In subtle, the "b" is silent: /ˈsʌtəl/.In lamb, the "b" is silent: /læm/.Only bugle contains the /b/ sound.Answer:A. bugle