Concept:The underlined letters in the given word are pronounced as the consonant cluster /ŋθ/, as in "strength."
Explanation:The word "length" is pronounced /lɛŋθ/.
It contains the same final consonant cluster /ŋθ/.
"Brother" has the consonant sound /ð/, not /ŋθ/.
"Think" is pronounced /θɪŋk/, ending with /ŋk/, not /ŋθ/.
"Breath" has /θ/ at the end but lacks the /ŋ/ sound.
Thus, only "length" matches the underlined consonant sound.
Answer:A. length