To solve this, let's analyze the pronunciation of each word and identify the one that differs from the other three in each question.
1. A. watches: ˈwɑʧɪz
B. sentences: ˈsɛntənsɪz
C. bridges: ˈbrɪʤɪz
D. believes: bɪˈlivz
In the above words, the stress patterns of A, B, and C are the same (ˈ), but D has a different stress pattern (bɪˈ). However, looking at the underlined parts, we notice that A, B, and C have /ɪz/ sound at the end, while D has /ɪvz/ sound at the end. Therefore, D has a different sound.
Answer: D. believes
2. A. conflict: ˈkɑnflɪkt
B. craftsman: ˈkræftsmən
C. science: saɪəns
D. control: kənˈtroʊl
In the above words, the stress patterns of A and B are the same (ˈ), while D has a different stress pattern (kənˈ). However, looking at the underlined parts, we notice that A and D have the /ɑ/ sound, while B has /æ/ sound and C has /aɪ/ sound. However, the main difference lies in the stress pattern between A, B and the rest.
Answer: C. science
3. A. trench: trɛnʧ
B. Christmas: ˈkrɪsməs
C. launch: lɔnʧ
D. attach: əˈtæʧ
In the above words, A has a /ɛ/ sound and /tr/ sound, while B, C, and D have different vowel sounds but are more similar in the underlined part, the /ʧ/ sound being the same, but A doesn't have the /ʧ/ sound preceded by the other similar sound. However, A and C have /ʧ/ sound but with a different preceding sound. C and the rest have the same preceding sound before the /ʧ/ sound.
Answer: A. trench
4. A. increased: ˈɪnkrist
B. attached: əˈtæʧt
C. garnished: ˈgɑrnɪʃt
D. orbited: ˈɔrbətəd
In the above words, A, B, and C have the /t/ sound, while D has the /d/ sound.
Answer: D. orbited
5. A. variety: vərˈaɪəti
B. ability: əˈbɪləti
C. dialect: ˈdaɪəlɛkt
D. accent: ˈæksɛnt
In the above words, A, B, and C have the /ɪə/ or /aɪə/ or /aɪ/ sound, while D has the /æ/ sound.
Answer: D. accent