Among the options given, three rivers flow from east to west, but one does not. The Narmada river (option 1), Tapti river (option 2), and Mahi river (option 4) all flow from east to west. However, the Cauvery river (option 3) does not flow from east to west. It flows from west to east, originating in the Western Ghats of Karnataka and flowing through the states of Tamil Nadu and Puducherry before emptying into the Bay of Bengal. It is important to note that the direction of a river`s flow is determined by the topography of the land, including the location of its source and the path it takes before reaching its destination.