The correct option "None" is appropriate because all the pairs listed are incorrectly matched regarding the rivers associated with each national park. Corbett National Park is situated near the Ramganga River, not the Ganga; Kaziranga is located along the Brahmaputra River, not the Manas; and the Kaveri River does not flow through Silent Valley National Park, which is actually in Kerala and has no significant river directly associated with it. Understanding the geographical associations of national parks and their respective water bodies is critical in UPSC Prelims, as such questions often test candidates' knowledge of Indian geography and biodiversity.