Concept:Each low-latitude climate has a unique combination of temperature uniformity, annual cycle, and rainfall pattern.
Explanation:Wet Equatorial climate: Uniform temperatures throughout the year, with mean near
27∘C. This matches characteristic 1.
Monsoon and trade wind coastal climate: A marked temperature cycle occurs, with very high temperatures just before the rainy season. This matches characteristic 2.
Wet-dry tropical climate: Temperatures show an annual cycle, with a high temperature during the high‑Sun season. This matches characteristic 3.
Dry tropical climate: A strong temperature cycle exists, with intense temperatures during the high‑Sun season. This matches characteristic 4.
Thus, the correct pairing is A‑1, B‑2, C‑3, D‑4.
Answer:Option B (A - 1, B - 2, C - 3, D - 4)