Concept:Antecedent rivers existed before the Himalayas were formed. They maintained their original courses while the mountains rose, cutting deep gorges across them.Explanation:The Satluj originates from the Rakas lake near Mansarovar. It flows across the Himalayan ranges through the Shipki La pass, creating a deep gorge. This shows it existed before the Himalayan uplift. The Indus, Satluj, Sarju (Kali), Arun, Tista, and Brahmaputra are all antecedent rivers. In contrast, rivers like Ganga, Yamuna, and Godavari are consequent or later-formed rivers. They did not predate the Himalayas. Therefore, among the given options, only the Satluj is an antecedent river.Answer:D. Satluj