Concept:Two words rhyme when they share the same final vowel and consonant sounds.
Explanation:The given word "boys" is pronounced /bɔɪz/, so the rhyming sound to match is /ɔɪz/.
Option A: "moist" is pronounced /mɔɪst/.
Its final sound is /ɪst/, not /ɔɪz/, so it does not rhyme with "boys".
Option B: "elbows" is pronounced /ˈel.bəʊz/.
Its final sound is /əʊz/, not /ɔɪz/, so it does not rhyme with "boys".
Option C: "noise" is pronounced /nɔɪz/.
Its final sound is /ɔɪz/, which exactly matches the final sound of "boys".
Option D: "stays" is pronounced /steɪz/.
Its final sound is /eɪz/, not /ɔɪz/, so it does not rhyme with "boys".
Only "noise" has the same ending vowel and consonant sounds as the given word.
Answer:C. noise