Concept:Identify the vowel sound in the underlined part of the given word and match it with the same vowel sound among the options.
Explanation:In the word “dumb,” the underlined vowel letter produces the sound /ʌ/.
Now examine each option:
A. comb → /kəʊm/: it has the vowel sound /əʊ/, not /ʌ/.
B. pupil → /ˈpjuːpəl/: it has the vowel sound /juː/, not /ʌ/.
C. urban → /ˈɜːbən/: it has the vowel sound /ɜː/, not /ʌ/.
D. month → /mʌnθ/: it has the vowel sound /ʌ/, which is exactly the same as the sound in “dumb.”
Answer:D. month