The river mentioned most frequently in the Rig Vedic hymns was

While the Saraswati is praised as the most sacred river (Nditarna) in the Rig Veda, the river mentioned most frequently across the hymns is the Indus (Sindhu). However, among the given choices, the options omit Indus. Let us re-verify: the Indus is mentioned most frequently in general text. If restricted strictly to the choices provided, Saraswati stands as the most prominently celebrated and frequently mentioned river system relative to Ganga and Yamuna.