A
1 only
B
2 and 3 only
C
2 only
D
1 and 3 only
Correct answer: (c) 2 only
Explanation
- A
1 only
1 only. Jet streams exist in both hemispheres.
- B
2 and 3 only
2 and 3 only. The eye is warmer, not ~10°C colder.
- C
2 only
2 only. Only intense tropical cyclones develop a clear eye. Jets are both hemispheres; the eye is a warm core.
- D
1 and 3 only
1 and 3 only. Both fail.
Summary. Official key is (c) 2 only. An eye forms in organised, intense cyclones, not in every low. Jet streams fly in both hemispheres. Inside the eye the air is warmer than the eyewall, not ten degrees colder.
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