In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?

• (a) Sea surface temperatures are low — Correct. Tropical cyclones generally need sea-surface temperature above about 26.5°C; the cold Benguela and Humboldt (Peru) currents keep waters in the South Atlantic and south-eastern Pacific relatively cool, inhibiting cyclogenesis.
• (b) Inter-tropical Convergence Zone seldom occurs — Incorrect. The ITCZ does occur in tropical latitudes; its mere presence/absence is not the main reason for no cyclone origin in these basins.
• (c) Coriolis force is too weak — Incorrect. These regions are not at the equator itself; Coriolis is sufficient in tropical latitudes where cyclones can form elsewhere.
• (d) Absence of land in those regions — Incorrect. Cyclones form over oceans, not because of land; lack of land is not the limiting factor here.

Therefore, the correct answer is (a).