What is the second longest river system in the Philippines, draining a major basin across central Mindanao into the Moro Gulf?
Answer and explanation
Correct answer: A. the Rio Grande de Mindanao (Pulangi River)
- Step 1: South of the Bukidnon-Lanao Plateau lies a large depression, the Cotabato Basin, which forms the lower river basin of the country's second largest river system, the Rio Grande de Mindanao (also known as the Mindanao River). Answer: the Rio Grande de Mindanao (Pulangi River). Why not the others: None of these fit: The Agusan River eastern waterway; The Davao River coastal basin; The Cagayan de Oro River rapids.
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