I.
1. C. faung
Explanation: The three words "natural", "habitat", "mammal" have their corresponding IPA notations, while "faung" does not. It is likely that "faung" is not a standard English word. In Khmer (Cambodian), "faung" (or "phăng") is the word for "noodle" or "rice noodle".
2. A. diversity
Explanation: In the three words "conservation", "successful", "reserve", the stress falls on the second syllable, while in "diversity" the stress falls on the second syllable as well, but "diversity" starts with "di" which is a diphthong that starts unstressed while the other words all start with an unstressed syllable with a single vowel sound.
However, a more accurate answer would be that the three words "conservation", "successful", "reserve" have the same pattern of an unstressed first syllable, then the stress falls on the second syllable. "Diversity" has an unstressed first syllable and then the stress falls on the second syllable, but the stress pattern is the same as the other words, but the underlined part actually differs: the three words "conservation", "successful", "reserve" start with the /k/, /s/, /r/ sounds, while "diversity" starts with the /d/ sound.
Another possible answer is that the three words "conservation", "successful", "reserve" end with the /ən/, /əl/, /əv/ sounds, while "diversity" ends with the /ɪti/ sounds.
3. A. marine
Explanation: In the three words "ecological", "drilling", "plastic", the stress falls on the first or the second syllable, but the three words start with the /ɛ/, /dr/, /pl/ sounds, while "marine" starts with the /mə/ sound, which is a schwa sound, an unstressed and neutral vowel sound, a mid-central vowel.
4. B. resources
5. D. destroy
6. A. food chain
7. B. wildlife
8. C. endangered
9. C. destroyed
10. C. living
11. B. Money management app
12. B. Self-directed
13. A. Time management
14. D. skills
15. C. self-motivated
16. D. trust
17. C. cyberbullying
18. C. pressure
19. B. shaming
20. D. poverty
21. A. violence
22. A. even though
23. C. even though
24. D. In spite of
25. B. since
26. A. In spite of