Correct answer: (b) Equatorial
Explanation
- A
Savannah
Savanna climates have a marked dry season and a wet season, not ‘each day more or less the same’ with a brief afternoon storm. This option is not the key.
- B
Equatorial
Equatorial (Af) climate is noted for daily convection: clear morning, building heat, afternoon thunder-showers, then clearing. The passage is the textbook description of that rhythm. This option is the official key.
- C
Monsoon
Monsoon climates have a strong seasonal contrast between wet and dry months, not a near-identical daily cycle year-round. This option is therefore wrong.
- D
Mediterranean
Mediterranean climate has dry, hot summers and wet winters; it does not match daily equatorial rain. This option is not the key.
Summary. Official key is (b) Equatorial. The passage describes the diurnal convection cycle of the equatorial belt. Savanna and monsoon are seasonal; Mediterranean is winter-rain. Afternoon thunderstorms after a bright morning are the equatorial signature. Only (b) fits the text.