The correct answer is over 7,000 islands, with the commonly cited precise figure being around 7,641, as recorded by the CIA World Factbook's geography section for the Philippines. This makes the Philippines one of the world's largest archipelagic nations, with its territory grouped into three main island divisions: Luzon in the north, the Visayas in the centre, and Mindanao in the south, only about two thousand of these islands being inhabited and roughly half remaining formally unnamed on official maps. About 3,000 islands (option A) understates the real figure significantly and does not match any authoritative source for the Philippines. About 12,000 islands (option C) is also incorrect, representing an overestimate with no factual basis in standard references. About 17,000 islands (option D) is a particularly common wrong answer because it is close to the island count sometimes cited for Indonesia, the world's largest archipelagic state, whose territory is frequently described as spanning over seventeen thousand islands; students who mentally merge the two neighbouring archipelagos often transfer Indonesia's figure onto the Philippines by mistake. This mix-up is one of the most frequent errors in Southeast Asian geography questions, precisely because both countries are island nations discussed together in regional GK passages. Revision takeaway: Philippines is approximately 7,000-plus islands (about 7,641), while Indonesia is approximately 17,000-plus islands; keep these two headline numbers firmly separated, since confusing them is the single most common mistake examiners exploit in this topic area.