Choose one word whose underline part is pronounced differently

C. weather
Choose one word whose underline part is pronounced differently.
1. A. contribute
2. A. athletics
B. company
B. thought
C. certain
C. defend
C. bear
C. prevention
D. colour
D. seventh
D. prevent.
D. hear
3. A. complete
4. A. clear
5. A. medicine
B. object
B. rear
B. fresh
D. level
* Choose one word whose stress is different from the others in the position.
1. A. forget
2. A. diverse
3. A. conserve
B. prefer
B. combine
B. prefer
C. pretend
C. promote
C. perform
4. A.
begin
B. destroy
5. A. remind
6. A. avoid
B. number
B. idea
C. complain
C. instance
C. define
7. A. address
B. rely
C. control
D. promise
D. language
D. threaten
D. office
D. design
D. adult
D. enter